Fix sparse warning:
security/integrity/ima/ima_policy.c:202:23: warning:
symbol 'arch_policy_entry' was not declared. Should it be static?
Fixes: 6191706246 ("ima: add support for arch specific policies")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Cc: stable@vger.kernel.org (linux-5.0)
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
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Merge tag 'selinux-pr-20190612' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fixes from Paul Moore:
"Three patches for v5.2.
One fixes a problem where we weren't correctly logging raw SELinux
labels, the other two fix problems where we weren't properly checking
calls to kmemdup()"
* tag 'selinux-pr-20190612' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix a missing-check bug in selinux_sb_eat_lsm_opts()
selinux: fix a missing-check bug in selinux_add_mnt_opt( )
selinux: log raw contexts as untrusted strings
When sid == 0 (we are resetting keycreate_sid to the default value), we
should skip the KEY__CREATE check.
Before this patch, doing a zero-sized write to /proc/self/keycreate
would check if the current task can create unlabeled keys (which would
usually fail with -EACCESS and generate an AVC). Now it skips the check
and correctly sets the task's keycreate_sid to 0.
Bug report: https://bugzilla.redhat.com/show_bug.cgi?id=1719067
Tested using the reproducer from the report above.
Fixes: 4eb582cf1f ("[PATCH] keys: add a way to store the appropriate context for newly-created keys")
Reported-by: Kir Kolyshkin <kir@sacred.ru>
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
In selinux_sb_eat_lsm_opts(), 'arg' is allocated by kmemdup_nul(). It
returns NULL when fails. So 'arg' should be checked. And 'mnt_opts'
should be freed when error.
Signed-off-by: Gen Zhang <blackgod016574@gmail.com>
Fixes: 99dbbb593f ("selinux: rewrite selinux_sb_eat_lsm_opts()")
Cc: <stable@vger.kernel.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>
In selinux_add_mnt_opt(), 'val' is allocated by kmemdup_nul(). It returns
NULL when fails. So 'val' should be checked. And 'mnt_opts' should be
freed when error.
Signed-off-by: Gen Zhang <blackgod016574@gmail.com>
Fixes: 757cbe597f ("LSM: new method: ->sb_add_mnt_opt()")
Cc: <stable@vger.kernel.org>
[PM: fixed some indenting problems]
Signed-off-by: Paul Moore <paul@paul-moore.com>
These strings may come from untrusted sources (e.g. file xattrs) so they
need to be properly escaped.
Reproducer:
# setenforce 0
# touch /tmp/test
# setfattr -n security.selinux -v 'kuřecí řízek' /tmp/test
# runcon system_u:system_r:sshd_t:s0 cat /tmp/test
(look at the generated AVCs)
Actual result:
type=AVC [...] trawcon=kuřecí řízek
Expected result:
type=AVC [...] trawcon=6B75C5996563C3AD20C599C3AD7A656B
Fixes: fede148324 ("selinux: log invalid contexts in AVCs")
Cc: stable@vger.kernel.org # v5.1+
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Fix sparse warning:
security/commoncap.c:1347:27: warning:
symbol 'capability_hooks' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: James Morris <jamorris@linux.microsoft.com>
Mostly due to x86 and acpi conversion, several documentation
links are still pointing to the old file. Fix them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Wolfram Sang <wsa@the-dreams.de>
Reviewed-by: Sven Van Asbroeck <TheSven73@gmail.com>
Reviewed-by: Bhupesh Sharma <bhsharma@redhat.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation version 2 of the license
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 315 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation version 2
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 135 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531081036.435762997@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of version 2 of the gnu general public license as
published by the free software foundation this program is
distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 64 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141901.894819585@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this software is licensed under the terms of the gnu general public
license version 2 as published by the free software foundation and
may be copied distributed and modified under those terms this
program is distributed in the hope that it will be useful but
without any warranty without even the implied warranty of
merchantability or fitness for a particular purpose see the gnu
general public license for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 285 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kernel calls deny_write_access() to prevent a file already opened
for write from being executed and also prevents files being executed
from being opened for write. For some reason this does not extend to
files being mmap'ed execute.
From an IMA perspective, measuring/appraising the integrity of a file
being mmap'ed shared execute, without first making sure the file cannot
be modified, makes no sense. This patch prevents files, in policy,
already mmap'ed shared write, from being mmap'ed execute.
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Pull integrity subsystem fixes from Mimi Zohar:
"Four bug fixes, none 5.2-specific, all marked for stable.
The first two are related to the architecture specific IMA policy
support. The other two patches, one is related to EVM signatures,
based on additional hash algorithms, and the other is related to
displaying the IMA policy"
* 'next-fixes-for-5.2-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
ima: show rules with IMA_INMASK correctly
evm: check hash algorithm passed to init_desc()
ima: fix wrong signed policy requirement when not appraising
x86/ima: Check EFI_RUNTIME_SERVICES before using
When lookup_user_key() checks whether the key is possessed, it should
use the key's existing index_key including the 'desc_len' field, rather
than recomputing the 'desc_len'. This doesn't change the behavior; this
way is just simpler and faster.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Grant Link permission to the possessers of request_key authentication keys,
thereby allowing a daemon that is servicing upcalls to arrange things such
that only the necessary auth key is passed to the actual service program
and not all the daemon's pending auth keys.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Add a keyctl to atomically move a link to a key from one keyring to
another. The key must exist in "from" keyring and a flag can be given to
cause the operation to fail if there's a matching key already in the "to"
keyring.
This can be done with:
keyctl(KEYCTL_MOVE,
key_serial_t key,
key_serial_t from_keyring,
key_serial_t to_keyring,
unsigned int flags);
The key being moved must grant Link permission and both keyrings must grant
Write permission.
flags should be 0 or KEYCTL_MOVE_EXCL, with the latter preventing
displacement of a matching key from the "to" keyring.
Signed-off-by: David Howells <dhowells@redhat.com>
Hoist the locking of out of __key_link_begin() and into its callers. This
is necessary to allow the upcoming key_move() operation to correctly order
taking of the source keyring semaphore, the destination keyring semaphore
and the keyring serialisation lock.
Signed-off-by: David Howells <dhowells@redhat.com>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 3029 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Break bits out of key_unlink() into helper functions so that they can be
used in implementing key_move().
Signed-off-by: David Howells <dhowells@redhat.com>
Show the '^' character when a policy rule has flag IMA_INMASK.
Fixes: 80eae209d6 ("IMA: allow reading back the current IMA policy")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This patch prevents memory access beyond the evm_tfm array by checking the
validity of the index (hash algorithm) passed to init_desc(). The hash
algorithm can be arbitrarily set if the security.ima xattr type is not
EVM_XATTR_HMAC.
Fixes: 5feeb61183 ("evm: Allow non-SHA1 digital signatures")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Fix some kdoc argument description mismatches reported by sparse and give
keyring_restrict() a description.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
cc: Mat Martineau <mathew.j.martineau@linux.intel.com>
Fix a pair of accesses that should be using RCU protection.
rcu_dereference_protected() is needed to access task_struct::real_parent.
current_cred() should be used to access current->cred.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
All of the remaining callers pass current into force_sig so
remove the task parameter to make this obvious and to make
misuse more difficult in the future.
This also makes it clear force_sig passes current into force_sig_info.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Here is another set of reviewed patches that adds SPDX tags to different
kernel files, based on a set of rules that are being used to parse the
comments to try to determine that the license of the file is
"GPL-2.0-or-later". Only the "obvious" versions of these matches are
included here, a number of "non-obvious" variants of text have been
found but those have been postponed for later review and analysis.
These patches have been out for review on the linux-spdx@vger mailing
list, and while they were created by automatic tools, they were
hand-verified by a bunch of different people, all whom names are on the
patches are reviewers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'spdx-5.2-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pule more SPDX updates from Greg KH:
"Here is another set of reviewed patches that adds SPDX tags to
different kernel files, based on a set of rules that are being used to
parse the comments to try to determine that the license of the file is
"GPL-2.0-or-later".
Only the "obvious" versions of these matches are included here, a
number of "non-obvious" variants of text have been found but those
have been postponed for later review and analysis.
These patches have been out for review on the linux-spdx@vger mailing
list, and while they were created by automatic tools, they were
hand-verified by a bunch of different people, all whom names are on
the patches are reviewers"
* tag 'spdx-5.2-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (85 commits)
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 125
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 123
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 122
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 121
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 119
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 116
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 113
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 112
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 111
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 110
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 106
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 105
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 103
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 101
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 98
...
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public licence as published by
the free software foundation either version 2 of the licence or at
your option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 114 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520170857.552531963@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sparse warnings are incurred by key_fs[ug]id_changed() due to unprotected
accesses of tsk->cred, which is marked __rcu.
Fix this by passing the new cred struct to these functions from
commit_creds() rather than the task pointer.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Since acdf52d97f ("selinux: convert to kvmalloc"), these check whether
an address-of value is NULL, which is pointless.
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
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Merge tag 'selinux-pr-20190521' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux fix from Paul Moore:
"One small SELinux patch to fix a problem when disconnecting a SCTP
socket with connect(AF_UNSPEC)"
* tag 'selinux-pr-20190521' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: do not report error on connect(AF_UNSPEC)
While the endiannes is being handled properly sparse was unable to verify
this due to type inconsistency. So introduce an additional __le32
respectively _le64 variable to be passed to le32/64_to_cpu() to allow
sparse to verify proper typing. Note that this patch does not change
the generated binary on little-endian systems - on 32bit powerpc it
does change the binary.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details you
should have received a copy of the gnu general public license along
with this program if not see http www gnu org licenses
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details [based]
[from] [clk] [highbank] [c] you should have received a copy of the
gnu general public license along with this program if not see http
www gnu org licenses
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 355 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
calling connect(AF_UNSPEC) on an already connected TCP socket is an
established way to disconnect() such socket. After commit 68741a8ada
("selinux: Fix ltp test connect-syscall failure") it no longer works
and, in the above scenario connect() fails with EAFNOSUPPORT.
Fix the above explicitly early checking for AF_UNSPEC family, and
returning success in that case.
Reported-by: Tom Deseyn <tdeseyn@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 68741a8ada ("selinux: Fix ltp test connect-syscall failure")
Suggested-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Kernel booted just with ima_policy=tcb (not with
ima_policy=appraise_tcb) shouldn't require signed policy.
Regression found with LTP test ima_policy.sh.
Fixes: c52657d93b ("ima: refactor ima_init_policy()")
Cc: stable@vger.kernel.org (linux-5.0)
Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Pull networking fixes from David Miller:
"Fixes all over:
1) Netdev refcnt leak in nf_flow_table, from Taehee Yoo.
2) Fix RCU usage in nf_tables, from Florian Westphal.
3) Fix DSA build when NET_DSA_TAG_BRCM_PREPEND is not set, from Yue
Haibing.
4) Add missing page read/write ops to realtek driver, from Heiner
Kallweit.
5) Endianness fix in qrtr code, from Nicholas Mc Guire.
6) Fix various bugs in DSA_SKB_* macros, from Vladimir Oltean.
7) Several BPF documentation cures, from Quentin Monnet.
8) Fix undefined behavior in narrow load handling of BPF verifier,
from Krzesimir Nowak.
9) DMA ops crash in SGI Seeq driver due to not set netdev parent
device pointer, from Thomas Bogendoerfer.
10) Flow dissector has to disable preemption when invoking BPF
program, from Eric Dumazet"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (48 commits)
net: ethernet: stmmac: dwmac-sun8i: enable support of unicast filtering
net: ethernet: ti: netcp_ethss: fix build
flow_dissector: disable preemption around BPF calls
bonding: fix arp_validate toggling in active-backup mode
net: meson: fixup g12a glue ephy id
net: phy: realtek: Replace phy functions with non-locked version in rtl8211e_config_init()
net: seeq: fix crash caused by not set dev.parent
of_net: Fix missing of_find_device_by_node ref count drop
net: mvpp2: cls: Add missing NETIF_F_NTUPLE flag
bpf: fix undefined behavior in narrow load handling
libbpf: detect supported kernel BTF features and sanitize BTF
selftests: bpf: Add files generated after build to .gitignore
tools: bpf: synchronise BPF UAPI header with tools
bpf: fix minor issues in documentation for BPF helpers.
bpf: fix recurring typo in documentation for BPF helpers
bpf: fix script for generating man page on BPF helpers
bpf: add various test cases for backward jumps
net: dccp : proto: remove Unneeded variable "err"
net: dsa: Remove the now unused DSA_SKB_CB_COPY() macro
net: dsa: Remove dangerous DSA_SKB_CLONE() macro
...
Commit cff0e6c3ec3e6230 ("tomoyo: Add a kernel config option for fuzzing
testing.") enabled the learning mode, but syzkaller is detecting any
"WARNING:" string as a crash. Thus, disable TOMOYO's quota warning if
built for fuzzing testing.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: James Morris <jamorris@linux.microsoft.com>
Commit 5625f2e326 ("TOMOYO: Change pathname for non-rename()able
filesystems.") intended to be applied to filesystems where the content is
not controllable from the userspace (e.g. proc, sysfs, securityfs), based
on an assumption that such filesystems do not support rename() operation.
But it turned out that read-only filesystems also do not support rename()
operation despite the content is controllable from the userspace, and that
commit is annoying TOMOYO users who want to use e.g. squashfs as the root
filesystem due to use of local name which does not start with '/'.
Therefore, based on an assumption that filesystems which require the
device argument upon mount() request is an indication that the content
is controllable from the userspace, do not use local name if a filesystem
does not support rename() operation but requires the device argument upon
mount() request.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jamorris@linux.microsoft.com>
KMSAN will complain if valid address length passed to bind()/connect()/
sendmsg() is shorter than sizeof("struct sockaddr"->sa_family) bytes.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jamorris@linux.microsoft.com>
syzbot is reporting kernel panic triggered by memory allocation fault
injection before loading TOMOYO's policy [1]. To make the fuzzing tests
useful, we need to assign a profile other than "disabled" (no-op) mode.
Therefore, let's allow syzbot to load TOMOYO's built-in policy for
"learning" mode using a kernel config option. This option must not be
enabled for kernels built for production system, for this option also
disables domain/program checks when modifying policy configuration via
/sys/kernel/security/tomoyo/ interface.
[1] https://syzkaller.appspot.com/bug?extid=29569ed06425fcf67a95
Reported-by: syzbot <syzbot+e1b8084e532b6ee7afab@syzkaller.appspotmail.com>
Reported-by: syzbot <syzbot+29569ed06425fcf67a95@syzkaller.appspotmail.com>
Reported-by: syzbot <syzbot+2ee3f8974c2e7dc69feb@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jamorris@linux.microsoft.com>
This reverts commit c7e0d6cca8.
It was agreed a slightly different fix via the selinux tree.
v1 -> v2:
- use the correct reverted commit hash
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
"Several bug fixes, many are quick merge-window regression cures:
- When NLM_F_EXCL is not set, allow same fib rule insertion. From
Hangbin Liu.
- Several cures in sja1105 DSA driver (while loop exit condition fix,
return of negative u8, etc.) from Vladimir Oltean.
- Handle tx/rx delays in realtek PHY driver properly, from Serge
Semin.
- Double free in cls_matchall, from Pieter Jansen van Vuuren.
- Disable SIOCSHWTSTAMP in macvlan/vlan containers, from Hangbin Liu.
- Endainness fixes in aqc111, from Oliver Neukum.
- Handle errors in packet_init properly, from Haibing Yue.
- Various W=1 warning fixes in kTLS, from Jakub Kicinski"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (34 commits)
nfp: add missing kdoc
net/tls: handle errors from padding_length()
net/tls: remove set but not used variables
docs/btf: fix the missing section marks
nfp: bpf: fix static check error through tightening shift amount adjustment
selftests: bpf: initialize bpf_object pointers where needed
packet: Fix error path in packet_init
net/tcp: use deferred jump label for TCP acked data hook
net: aquantia: fix undefined devm_hwmon_device_register_with_info reference
aqc111: fix double endianness swap on BE
aqc111: fix writing to the phy on BE
aqc111: fix endianness issue in aqc111_change_mtu
vlan: disable SIOCSHWTSTAMP in container
macvlan: disable SIOCSHWTSTAMP in container
tipc: fix hanging clients using poll with EPOLLOUT flag
tuntap: synchronize through tfiles array instead of tun->numqueues
tuntap: fix dividing by zero in ebpf queue selection
dwmac4_prog_mtl_tx_algorithms() missing write operation
ptp_qoriq: fix NULL access if ptp dt node missing
net/sched: avoid double free on matchall reoffload
...
Pull smack updates from James Morris:
"Bug fixes for IPv6 handling and other issues and two memory use
improvements."
* 'next-smack' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
Smack: Fix kbuild reported build error
smack: Check address length before reading address family
Smack: Fix IPv6 handling of 0 secmark
Smack: Create smack_rule cache to optimize memory usage
smack: removal of global rule list
calling connect(AF_UNSPEC) on an already connected TCP socket is an
established way to disconnect() such socket. After commit 68741a8ada
("selinux: Fix ltp test connect-syscall failure") it no longer works
and, in the above scenario connect() fails with EAFNOSUPPORT.
Fix the above falling back to the generic/old code when the address family
is not AF_INET{4,6}, but leave the SCTP code path untouched, as it has
specific constraints.
Fixes: 68741a8ada ("selinux: Fix ltp test connect-syscall failure")
Reported-by: Tom Deseyn <tdeseyn@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull mount ABI updates from Al Viro:
"The syscalls themselves, finally.
That's not all there is to that stuff, but switching individual
filesystems to new methods is fortunately independent from everything
else, so e.g. NFS series can go through NFS tree, etc.
As those conversions get done, we'll be finally able to get rid of a
bunch of duplication in fs/super.c introduced in the beginning of the
entire thing. I expect that to be finished in the next window..."
* 'work.mount-syscalls' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
vfs: Add a sample program for the new mount API
vfs: syscall: Add fspick() to select a superblock for reconfiguration
vfs: syscall: Add fsmount() to create a mount for a superblock
vfs: syscall: Add fsconfig() for configuring and managing a context
vfs: Implement logging through fs_context
vfs: syscall: Add fsopen() to prepare for superblock creation
Make anon_inodes unconditional
teach move_mount(2) to work with OPEN_TREE_CLONE
vfs: syscall: Add move_mount(2) to move mounts around
vfs: syscall: Add open_tree(2) to reference or clone a mount
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Merge tag 'audit-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
"We've got a reasonably broad set of audit patches for the v5.2 merge
window, the highlights are below:
- The biggest change, and the source of all the arch/* changes, is
the patchset from Dmitry to help enable some of the work he is
doing around PTRACE_GET_SYSCALL_INFO.
To be honest, including this in the audit tree is a bit of a
stretch, but it does help move audit a little further along towards
proper syscall auditing for all arches, and everyone else seemed to
agree that audit was a "good" spot for this to land (or maybe they
just didn't want to merge it? dunno.).
- We can now audit time/NTP adjustments.
- We continue the work to connect associated audit records into a
single event"
* tag 'audit-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: (21 commits)
audit: fix a memory leak bug
ntp: Audit NTP parameters adjustment
timekeeping: Audit clock adjustments
audit: purge unnecessary list_empty calls
audit: link integrity evm_write_xattrs record to syscall event
syscall_get_arch: add "struct task_struct *" argument
unicore32: define syscall_get_arch()
Move EM_UNICORE to uapi/linux/elf-em.h
nios2: define syscall_get_arch()
nds32: define syscall_get_arch()
Move EM_NDS32 to uapi/linux/elf-em.h
m68k: define syscall_get_arch()
hexagon: define syscall_get_arch()
Move EM_HEXAGON to uapi/linux/elf-em.h
h8300: define syscall_get_arch()
c6x: define syscall_get_arch()
arc: define syscall_get_arch()
Move EM_ARCOMPACT and EM_ARCV2 to uapi/linux/elf-em.h
audit: Make audit_log_cap and audit_copy_inode static
audit: connect LOGIN record to its syscall record
...
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Merge tag 'selinux-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux updates from Paul Moore:
"We've got a few SELinux patches for the v5.2 merge window, the
highlights are below:
- Add LSM hooks, and the SELinux implementation, for proper labeling
of kernfs. While we are only including the SELinux implementation
here, the rest of the LSM folks have given the hooks a thumbs-up.
- Update the SELinux mdp (Make Dummy Policy) script to actually work
on a modern system.
- Disallow userspace to change the LSM credentials via
/proc/self/attr when the task's credentials are already overridden.
The change was made in procfs because all the LSM folks agreed this
was the Right Thing To Do and duplicating it across each LSM was
going to be annoying"
* tag 'selinux-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
proc: prevent changes to overridden credentials
selinux: Check address length before reading address family
kernfs: fix xattr name handling in LSM helpers
MAINTAINERS: update SELinux file patterns
selinux: avoid uninitialized variable warning
selinux: remove useless assignments
LSM: lsm_hooks.h - fix missing colon in docstring
selinux: Make selinux_kernfs_init_security static
kernfs: initialize security of newly created nodes
selinux: implement the kernfs_init_security hook
LSM: add new hook for kernfs node initialization
kernfs: use simple_xattrs for security attributes
selinux: try security xattr after genfs for kernfs filesystems
kernfs: do not alloc iattrs in kernfs_xattr_get
kernfs: clean up struct kernfs_iattrs
scripts/selinux: fix build
selinux: use kernel linux/socket.h for genheaders and mdp
scripts/selinux: modernize mdp
- Consolidate memory initialization Kconfigs (Kees)
- Implement support for Clang's stack variable auto-init (Alexander)
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Merge tag 'meminit-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull compiler-based variable initialization updates from Kees Cook:
"This is effectively part of my gcc-plugins tree, but as this adds some
Clang support, it felt weird to still call it "gcc-plugins". :)
This consolidates Kconfig for the existing stack variable
initialization (via structleak and stackleak gcc plugins) and adds
Alexander Potapenko's support for Clang's new similar functionality.
Summary:
- Consolidate memory initialization Kconfigs (Kees)
- Implement support for Clang's stack variable auto-init (Alexander)"
* tag 'meminit-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
security: Implement Clang's stack initialization
security: Move stackleak config to Kconfig.hardening
security: Create "kernel hardening" config area
Pull vfs inode freeing updates from Al Viro:
"Introduction of separate method for RCU-delayed part of
->destroy_inode() (if any).
Pretty much as posted, except that destroy_inode() stashes
->free_inode into the victim (anon-unioned with ->i_fops) before
scheduling i_callback() and the last two patches (sockfs conversion
and folding struct socket_wq into struct socket) are excluded - that
pair should go through netdev once davem reopens his tree"
* 'work.icache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (58 commits)
orangefs: make use of ->free_inode()
shmem: make use of ->free_inode()
hugetlb: make use of ->free_inode()
overlayfs: make use of ->free_inode()
jfs: switch to ->free_inode()
fuse: switch to ->free_inode()
ext4: make use of ->free_inode()
ecryptfs: make use of ->free_inode()
ceph: use ->free_inode()
btrfs: use ->free_inode()
afs: switch to use of ->free_inode()
dax: make use of ->free_inode()
ntfs: switch to ->free_inode()
securityfs: switch to ->free_inode()
apparmor: switch to ->free_inode()
rpcpipe: switch to ->free_inode()
bpf: switch to ->free_inode()
mqueue: switch to ->free_inode()
ufs: switch to ->free_inode()
coda: switch to ->free_inode()
...
Pull security subsystem updates from James Morris:
"Just a few bugfixes and documentation updates"
* 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
seccomp: fix up grammar in comment
Revert "security: inode: fix a missing check for securityfs_create_file"
Yama: mark function as static
security: inode: fix a missing check for securityfs_create_file
keys: safe concurrent user->{session,uid}_keyring access
security: don't use RCU accessors for cred->session_keyring
Yama: mark local symbols as static
LSM: lsm_hooks.h: fix documentation format
LSM: fix documentation for the shm_* hooks
LSM: fix documentation for the sem_* hooks
LSM: fix documentation for the msg_queue_* hooks
LSM: fix documentation for the audit_* hooks
LSM: fix documentation for the path_chmod hook
LSM: fix documentation for the socket_getpeersec_dgram hook
LSM: fix documentation for the task_setscheduler hook
LSM: fix documentation for the socket_post_create hook
LSM: fix documentation for the syslog hook
LSM: fix documentation for sb_copy_data hook
Pull crypto update from Herbert Xu:
"API:
- Add support for AEAD in simd
- Add fuzz testing to testmgr
- Add panic_on_fail module parameter to testmgr
- Use per-CPU struct instead multiple variables in scompress
- Change verify API for akcipher
Algorithms:
- Convert x86 AEAD algorithms over to simd
- Forbid 2-key 3DES in FIPS mode
- Add EC-RDSA (GOST 34.10) algorithm
Drivers:
- Set output IV with ctr-aes in crypto4xx
- Set output IV in rockchip
- Fix potential length overflow with hashing in sun4i-ss
- Fix computation error with ctr in vmx
- Add SM4 protected keys support in ccree
- Remove long-broken mxc-scc driver
- Add rfc4106(gcm(aes)) cipher support in cavium/nitrox"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (179 commits)
crypto: ccree - use a proper le32 type for le32 val
crypto: ccree - remove set but not used variable 'du_size'
crypto: ccree - Make cc_sec_disable static
crypto: ccree - fix spelling mistake "protedcted" -> "protected"
crypto: caam/qi2 - generate hash keys in-place
crypto: caam/qi2 - fix DMA mapping of stack memory
crypto: caam/qi2 - fix zero-length buffer DMA mapping
crypto: stm32/cryp - update to return iv_out
crypto: stm32/cryp - remove request mutex protection
crypto: stm32/cryp - add weak key check for DES
crypto: atmel - remove set but not used variable 'alg_name'
crypto: picoxcell - Use dev_get_drvdata()
crypto: crypto4xx - get rid of redundant using_sd variable
crypto: crypto4xx - use sync skcipher for fallback
crypto: crypto4xx - fix cfb and ofb "overran dst buffer" issues
crypto: crypto4xx - fix ctr-aes missing output IV
crypto: ecrdsa - select ASN1 and OID_REGISTRY for EC-RDSA
crypto: ux500 - use ccflags-y instead of CFLAGS_<basename>.o
crypto: ccree - handle tee fips error during power management resume
crypto: ccree - add function to handle cryptocell tee fips error
...
- Support for kernel address space layout randomization
- Add support for kernel image signature verification
- Convert s390 to the generic get_user_pages_fast code
- Convert s390 to the stack unwind API analog to x86
- Add support for CPU directed interrupts for PCI devices
- Provide support for MIO instructions to the PCI base layer, this
will allow the use of direct PCI mappings in user space code
- Add the basic KVM guest ultravisor interface for protected VMs
- Add AT_HWCAP bits for several new hardware capabilities
- Update the CPU measurement facility counter definitions to SVN 6
- Arnds cleanup patches for his quest to get LLVM compiles working
- A vfio-ccw update with bug fixes and support for halt and clear
- Improvements for the hardware TRNG code
- Another round of cleanup for the QDIO layer
- Numerous cleanups and bug fixes
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Merge tag 's390-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
- Support for kernel address space layout randomization
- Add support for kernel image signature verification
- Convert s390 to the generic get_user_pages_fast code
- Convert s390 to the stack unwind API analog to x86
- Add support for CPU directed interrupts for PCI devices
- Provide support for MIO instructions to the PCI base layer, this will
allow the use of direct PCI mappings in user space code
- Add the basic KVM guest ultravisor interface for protected VMs
- Add AT_HWCAP bits for several new hardware capabilities
- Update the CPU measurement facility counter definitions to SVN 6
- Arnds cleanup patches for his quest to get LLVM compiles working
- A vfio-ccw update with bug fixes and support for halt and clear
- Improvements for the hardware TRNG code
- Another round of cleanup for the QDIO layer
- Numerous cleanups and bug fixes
* tag 's390-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (98 commits)
s390/vdso: drop unnecessary cc-ldoption
s390: fix clang -Wpointer-sign warnigns in boot code
s390: drop CONFIG_VIRT_TO_BUS
s390: boot, purgatory: pass $(CLANG_FLAGS) where needed
s390: only build for new CPUs with clang
s390: simplify disabled_wait
s390/ftrace: use HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
s390/unwind: introduce stack unwind API
s390/opcodes: add missing instructions to the disassembler
s390/bug: add entry size to the __bug_table section
s390: use proper expoline sections for .dma code
s390/nospec: rename assembler generated expoline thunks
s390: add missing ENDPROC statements to assembler functions
locking/lockdep: check for freed initmem in static_obj()
s390/kernel: add support for kernel address space layout randomization (KASLR)
s390/kernel: introduce .dma sections
s390/sclp: do not use static sccbs
s390/kprobes: use static buffer for insn_page
s390/kernel: convert SYSCALL and PGM_CHECK handlers to .quad
s390/kernel: build a relocatable kernel
...
Pull vfs fixes from Al Viro:
- a couple of ->i_link use-after-free fixes
- regression fix for wrong errno on absent device name in mount(2)
(this cycle stuff)
- ancient UFS braino in large GID handling on Solaris UFS images (bogus
cut'n'paste from large UID handling; wrong field checked to decide
whether we should look at old (16bit) or new (32bit) field)
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ufs: fix braino in ufs_get_inode_gid() for solaris UFS flavour
Abort file_remove_privs() for non-reg. files
[fix] get rid of checking for absent device name in vfs_get_tree()
apparmorfs: fix use-after-free on symlink traversal
securityfs: fix use-after-free on symlink traversal
The variable sap is defined under ifdef, but a recently
added use of the variable was not. Put that use under ifdef
as well.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
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Merge tag 'selinux-pr-20190429' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fix from Paul Moore:
"One small patch for the stable folks to fix a problem when building
against the latest glibc.
I'll be honest and say that I'm not really thrilled with the idea of
sending this up right now, but Greg is a little annoyed so here I
figured I would at least send this"
* tag 'selinux-pr-20190429' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: use kernel linux/socket.h for genheaders and mdp
KMSAN will complain if valid address length passed to bind()/connect()/
sendmsg() is shorter than sizeof("struct sockaddr"->sa_family) bytes.
Also, since smk_ipv6_port_label()/smack_netlabel_send()/
smack_ipv6host_label()/smk_ipv6_check()/smk_ipv6_port_check() are not
checking valid address length and/or address family, make sure we check
both. The minimal valid length in smack_socket_connect() is changed from
sizeof(struct sockaddr_in6) bytes to SIN6_LEN_RFC2133 bytes, for it seems
that Smack is not using "struct sockaddr_in6"->sin6_scope_id field.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
When compiling genheaders and mdp from a newer host kernel, the
following error happens:
In file included from scripts/selinux/genheaders/genheaders.c:18:
./security/selinux/include/classmap.h:238:2: error: #error New
address family defined, please update secclass_map. #error New
address family defined, please update secclass_map. ^~~~~
make[3]: *** [scripts/Makefile.host:107:
scripts/selinux/genheaders/genheaders] Error 1 make[2]: ***
[scripts/Makefile.build:599: scripts/selinux/genheaders] Error 2
make[1]: *** [scripts/Makefile.build:599: scripts/selinux] Error 2
make[1]: *** Waiting for unfinished jobs....
Instead of relying on the host definition, include linux/socket.h in
classmap.h to have PF_MAX.
Cc: stable@vger.kernel.org
Signed-off-by: Paulo Alcantara <paulo@paulo.ac>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
[PM: manually merge in mdp.c, subject line tweaks]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Read the IPL Report block provided by secure-boot, add the entries
of the certificate list to the system key ring and print the list
of components.
PR: Adjust to Vasilys bootdata_preserved patch set. Preserve ipl_cert_list
for later use in kexec_file.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The flags field in 'struct shash_desc' never actually does anything.
The only ostensibly supported flag is CRYPTO_TFM_REQ_MAY_SLEEP.
However, no shash algorithm ever sleeps, making this flag a no-op.
With this being the case, inevitably some users who can't sleep wrongly
pass MAY_SLEEP. These would all need to be fixed if any shash algorithm
actually started sleeping. For example, the shash_ahash_*() functions,
which wrap a shash algorithm with the ahash API, pass through MAY_SLEEP
from the ahash API to the shash API. However, the shash functions are
called under kmap_atomic(), so actually they're assumed to never sleep.
Even if it turns out that some users do need preemption points while
hashing large buffers, we could easily provide a helper function
crypto_shash_update_large() which divides the data into smaller chunks
and calls crypto_shash_update() and cond_resched() for each chunk. It's
not necessary to have a flag in 'struct shash_desc', nor is it necessary
to make individual shash algorithms aware of this at all.
Therefore, remove shash_desc::flags, and document that the
crypto_shash_*() functions can be called from any context.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
CONFIG_INIT_STACK_ALL turns on stack initialization based on
-ftrivial-auto-var-init in Clang builds, which has greater coverage
than CONFIG_GCC_PLUGINS_STRUCTLEAK_BYREF_ALL.
-ftrivial-auto-var-init Clang option provides trivial initializers for
uninitialized local variables, variable fields and padding.
It has three possible values:
pattern - uninitialized locals are filled with a fixed pattern
(mostly 0xAA on 64-bit platforms, see https://reviews.llvm.org/D54604
for more details, but 0x000000AA for 32-bit pointers) likely to cause
crashes when uninitialized value is used;
zero (it's still debated whether this flag makes it to the official
Clang release) - uninitialized locals are filled with zeroes;
uninitialized (default) - uninitialized locals are left intact.
This patch uses only the "pattern" mode when CONFIG_INIT_STACK_ALL is
enabled.
Developers have the possibility to opt-out of this feature on a
per-variable basis by using __attribute__((uninitialized)), but such
use should be well justified in comments.
Co-developed-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Alexander Potapenko <glider@google.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Right now kernel hardening options are scattered around various Kconfig
files. This can be a central place to collect these kinds of options
going forward. This is initially populated with the memory initialization
options from the gcc-plugins.
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Pull cgroup fix from Tejun Heo:
"A patch to fix a RCU imbalance error in the devices cgroup
configuration error path"
* 'for-5.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
device_cgroup: fix RCU imbalance in error case
Allow to use EC-RDSA signatures for IMA by determining signature type by
the hash algorithm name. This works good for EC-RDSA since Streebog and
EC-RDSA should always be used together.
Cc: Mimi Zohar <zohar@linux.ibm.com>
Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
Cc: linux-integrity@vger.kernel.org
Signed-off-by: Vitaly Chikunov <vt@altlinux.org>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
KMSAN will complain if valid address length passed to bind()/connect() is
shorter than sizeof("struct sockaddr"->sa_family) bytes.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This reverts commit d1a0846006.
From Al Viro:
"Rather bad way to do it - generally, register_filesystem() should be
the last thing done by initialization. Any modular code that
does unregister_filesystem() on failure exit is flat-out broken;
here it's not instantly FUBAR, but it's a bloody bad example.
What's more, why not let simple_fill_super() do it? Just
static int fill_super(struct super_block *sb, void *data, int silent)
{
static const struct tree_descr files[] = {
{"lsm", &lsm_ops, 0444},
{""}
};
and to hell with that call of securityfs_create_file() and all its
failure handling..."
Signed-off-by: James Morris <james.morris@microsoft.com>
symlink body shouldn't be freed without an RCU delay. Switch apparmorfs
to ->destroy_inode() and use of call_rcu(); free both the inode and symlink
body in the callback.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
symlink body shouldn't be freed without an RCU delay. Switch securityfs
to ->destroy_inode() and use of call_rcu(); free both the inode and symlink
body in the callback.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Sparse complains yama_task_prctl can be static. Fix it by making
it static.
Signed-off-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: James Morris <james.morris@microsoft.com>
securityfs_create_file may fail. The fix checks its status and
returns the error code upstream if it fails.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: James Morris <james.morris@microsoft.com>
The current code can perform concurrent updates and reads on
user->session_keyring and user->uid_keyring. Add a comment to
struct user_struct to document the nontrivial locking semantics, and use
READ_ONCE() for unlocked readers and smp_store_release() for writers to
prevent memory ordering issues.
Fixes: 69664cf16a ("keys: don't generate user and user session keyrings unless they're accessed")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
sparse complains that a bunch of places in kernel/cred.c access
cred->session_keyring without the RCU helpers required by the __rcu
annotation.
cred->session_keyring is written in the following places:
- prepare_kernel_cred() [in a new cred struct]
- keyctl_session_to_parent() [in a new cred struct]
- prepare_creds [in a new cred struct, via memcpy]
- install_session_keyring_to_cred()
- from install_session_keyring() on new creds
- from join_session_keyring() on new creds [twice]
- from umh_keys_init()
- from call_usermodehelper_exec_async() on new creds
All of these writes are before the creds are committed; therefore,
cred->session_keyring doesn't need RCU protection.
Remove the __rcu annotation and fix up all existing users that use __rcu.
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
sparse complains that Yama defines functions and a variable as non-static
even though they don't exist in any header. Fix it by making them static.
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: James Morris <james.morris@microsoft.com>
Before commit c5459b829b ("LSM: Plumb visibility into optional "enabled"
state"), /sys/module/apparmor/parameters/enabled would show "Y" or "N"
since it was using the "bool" handler. After being changed to "int",
this switched to "1" or "0", breaking the userspace AppArmor detection
of dbus-broker. This restores the Y/N output while keeping the LSM
infrastructure happy.
Before:
$ cat /sys/module/apparmor/parameters/enabled
1
After:
$ cat /sys/module/apparmor/parameters/enabled
Y
Reported-by: David Rheinsberg <david.rheinsberg@gmail.com>
Reviewed-by: David Rheinsberg <david.rheinsberg@gmail.com>
Link: https://lkml.kernel.org/r/CADyDSO6k8vYb1eryT4g6+EHrLCvb68GAbHVWuULkYjcZcYNhhw@mail.gmail.com
Fixes: c5459b829b ("LSM: Plumb visibility into optional "enabled" state")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Fixes the warning reported by Clang:
security/keys/trusted.c:146:17: warning: passing an object that
undergoes default
argument promotion to 'va_start' has undefined behavior [-Wvarargs]
va_start(argp, h3);
^
security/keys/trusted.c:126:37: note: parameter of type 'unsigned
char' is declared here
unsigned char *h2, unsigned char h3, ...)
^
Specifically, it seems that both the C90 (4.8.1.1) and C11 (7.16.1.4)
standards explicitly call this out as undefined behavior:
The parameter parmN is the identifier of the rightmost parameter in
the variable parameter list in the function definition (the one just
before the ...). If the parameter parmN is declared with ... or with a
type that is not compatible with the type that results after
application of the default argument promotions, the behavior is
undefined.
Link: https://github.com/ClangBuiltLinux/linux/issues/41
Link: https://www.eskimo.com/~scs/cclass/int/sx11c.html
Suggested-by: David Laight <David.Laight@aculab.com>
Suggested-by: Denis Kenzior <denkenz@gmail.com>
Suggested-by: James Bottomley <jejb@linux.vnet.ibm.com>
Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
Allow trusted.ko to initialize w/o a TPM. This commit also adds checks
to the exported functions to fail when a TPM is not available.
Fixes: 240730437d ("KEYS: trusted: explicitly use tpm_chip structure...")
Cc: James Morris <jmorris@namei.org>
Reported-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
The implementation of kernfs_security_xattr_*() helpers reuses the
kernfs_node_xattr_*() functions, which take the suffix of the xattr name
and extract full xattr name from it using xattr_full_name(). However,
this function relies on the fact that the suffix passed to xattr
handlers from VFS is always constructed from the full name by just
incerementing the pointer. This doesn't necessarily hold for the callers
of kernfs_security_xattr_*(), so their usage will easily lead to
out-of-bounds access.
Fix this by moving the xattr name reconstruction to the VFS xattr
handlers and replacing the kernfs_security_xattr_*() helpers with more
general kernfs_xattr_*() helpers that take full xattr name and allow
accessing all kernfs node's xattrs.
Reported-by: kernel test robot <rong.a.chen@intel.com>
Fixes: b230d5aba2 ("LSM: add new hook for kernfs node initialization")
Fixes: ec882da5cd ("selinux: implement the kernfs_init_security hook")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Handle the case where the skb for an IPv6 packet contains
a 0 in the secmark for a packet generated locally. This
can only happen for system packets, so allow the access.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
This patch allows for small memory optimization by creating the
kmem cache for "struct smack_rule" instead of using kzalloc.
For adding new smack rule, kzalloc is used to allocate the memory
for "struct smack_rule". kzalloc will always allocate 32 or 64 bytes
for 1 structure depending upon the kzalloc cache sizes available in
system. Although the size of structure is 20 bytes only, resulting
in memory wastage per object in the default pool.
For e.g., if there are 20000 rules, then it will save 240KB(20000*12)
which is crucial for small memory targets.
Signed-off-by: Vishal Goel <vishal.goel@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
In this patch, global rule list has been removed. Now all
smack rules will be read using "smack_known_list". This list contains
all the smack labels and internally each smack label structure
maintains the list of smack rules corresponding to that smack label.
So there is no need to maintain extra list.
1) Small Memory Optimization
For eg. if there are 20000 rules, then it will save 625KB(20000*32),
which is critical for small embedded systems.
2) Reducing the time taken in writing rules on load/load2 interface
3) Since global rule list is just used to read the rules, so there
will be no performance impact on system
Signed-off-by: Vishal Goel <vishal.goel@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Casey Schaufler <cschaufler@localhost.localdomain>
Commit 70b62c2566 ("LoadPin: Initialize as ordered LSM") removed
CONFIG_DEFAULT_SECURITY_{SELINUX,SMACK,TOMOYO,APPARMOR,DAC} from
security/Kconfig and changed CONFIG_LSM to provide a fixed ordering as a
default value. That commit expected that existing users (upgrading from
Linux 5.0 and earlier) will edit CONFIG_LSM value in accordance with
their CONFIG_DEFAULT_SECURITY_* choice in their old kernel configs. But
since users might forget to edit CONFIG_LSM value, this patch revives
the choice (only for providing the default value for CONFIG_LSM) in order
to make sure that CONFIG_LSM reflects CONFIG_DEFAULT_SECURITY_* from their
old kernel configs.
Note that since TOMOYO can be fully stacked against the other legacy
major LSMs, when it is selected, it explicitly disables the other LSMs
to avoid them also initializing since TOMOYO does not expect this
currently.
Reported-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Fixes: 70b62c2566 ("LoadPin: Initialize as ordered LSM")
Co-developed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
sparse complains that Yama defines functions and a variable as non-static
even though they don't exist in any header. Fix it by making them static.
Co-developed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Jann Horn <jannh@google.com>
[kees: merged similar static-ness fixes into a single patch]
Link: https://lkml.kernel.org/r/20190326230841.87834-1-jannh@google.com
Link: https://lkml.kernel.org/r/1553673018-19234-1-git-send-email-mojha@codeaurora.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.morris@microsoft.com>
In commit fa516b66a1 ("EVM: Allow runtime modification of the set of
verified xattrs"), the call to audit_log_start() is missing a context to
link it to an audit event. Since this event is in user context, add
the process' syscall context to the record.
In addition, the orphaned keyword "locked" appears in the record.
Normalize this by changing it to logging the locking string "." as any
other user input in the "xattr=" field.
Please see the github issue
https://github.com/linux-audit/audit-kernel/issues/109
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Acked-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
clang correctly points out a code path that would lead
to an uninitialized variable use:
security/selinux/netlabel.c:310:6: error: variable 'addr' is used uninitialized whenever 'if' condition is false
[-Werror,-Wsometimes-uninitialized]
if (ip_hdr(skb)->version == 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~
security/selinux/netlabel.c:322:40: note: uninitialized use occurs here
rc = netlbl_conn_setattr(ep->base.sk, addr, &secattr);
^~~~
security/selinux/netlabel.c:310:2: note: remove the 'if' if its condition is always true
if (ip_hdr(skb)->version == 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
security/selinux/netlabel.c:291:23: note: initialize the variable 'addr' to silence this warning
struct sockaddr *addr;
^
= NULL
This is probably harmless since we should not see ipv6 packets
of CONFIG_IPV6 is disabled, but it's better to rearrange the code
so this cannot happen.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[PM: removed old patchwork link, fixed checkpatch.pl style errors]
Signed-off-by: Paul Moore <paul@paul-moore.com>
The code incorrectly assigned directly to the variables instead of the
values they point to. Since the values are already set to NULL/0 at the
beginning of the function, we can simply remove these useless
assignments.
Reported-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Fixes: fede148324 ("selinux: log invalid contexts in AVCs")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
[PM: removed a bad comment that was causing compiler warnings]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Fix sparse warning:
security/selinux/hooks.c:3389:5: warning:
symbol 'selinux_kernfs_init_security' was not declared. Should it be static?
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
The hook applies the same logic as selinux_determine_inode_label(), with
the exception of the super_block handling, which will be enforced on the
actual inodes later by other hooks.
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
[PM: minor merge fixes]
Signed-off-by: Paul Moore <paul@paul-moore.com>
This patch introduces a new security hook that is intended for
initializing the security data for newly created kernfs nodes, which
provide a way of storing a non-default security context, but need to
operate independently from mounts (and therefore may not have an
associated inode at the moment of creation).
The main motivation is to allow kernfs nodes to inherit the context of
the parent under SELinux, similar to the behavior of
security_inode_init_security(). Other LSMs may implement their own logic
for handling the creation of new nodes.
This patch also adds helper functions to <linux/kernfs.h> for
getting/setting security xattrs of a kernfs node so that LSMs hooks are
able to do their job. Other important attributes should be accessible
direcly in the kernfs_node fields (in case there is need for more, then
new helpers should be added to kernfs.h along with the patch that needs
them).
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
[PM: more manual merge fixes]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Since kernfs supports the security xattr handlers, we can simply use
these to determine the inode's context, dropping the need to update it
from kernfs explicitly using a security_inode_notifysecctx() call.
We achieve this by setting a new sbsec flag SE_SBGENFS_XATTR to all
mounts that are known to use kernfs under the hood and then fetching the
xattrs after determining the fallback genfs sid in
inode_doinit_with_dentry() when this flag is set.
This will allow implementing full security xattr support in kernfs and
removing the ...notifysecctx() call in a subsequent patch.
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
[PM: more manual merge fixups]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Add a move_mount() system call that will move a mount from one place to
another and, in the next commit, allow to attach an unattached mount tree.
The new system call looks like the following:
int move_mount(int from_dfd, const char *from_path,
int to_dfd, const char *to_path,
unsigned int flags);
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-api@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
When dev_exception_add() returns an error (due to a failed memory
allocation), make sure that we move the RCU preemption count back to where
it was before we were called. We dropped the RCU read lock inside the loop
body, so we can't just "break".
sparse complains about this, too:
$ make -s C=2 security/device_cgroup.o
./include/linux/rcupdate.h:647:9: warning: context imbalance in
'propagate_exception' - unexpected unlock
Fixes: d591fb5661 ("device_cgroup: simplify cgroup tree walk in propagate_exception()")
Cc: stable@vger.kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
When compiling genheaders and mdp from a newer host kernel, the
following error happens:
In file included from scripts/selinux/genheaders/genheaders.c:18:
./security/selinux/include/classmap.h:238:2: error: #error New
address family defined, please update secclass_map. #error New
address family defined, please update secclass_map. ^~~~~
make[3]: *** [scripts/Makefile.host:107:
scripts/selinux/genheaders/genheaders] Error 1 make[2]: ***
[scripts/Makefile.build:599: scripts/selinux/genheaders] Error 2
make[1]: *** [scripts/Makefile.build:599: scripts/selinux] Error 2
make[1]: *** Waiting for unfinished jobs....
Instead of relying on the host definition, include linux/socket.h in
classmap.h to have PF_MAX.
Signed-off-by: Paulo Alcantara <paulo@paulo.ac>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
[PM: manually merge in mdp.c, subject line tweaks]
Signed-off-by: Paul Moore <paul@paul-moore.com>
The conversion to kvmalloc() forgot to account for the possibility that
p->type_attr_map_array might be null in policydb_destroy().
Fix this by destroying its contents only if it is not NULL.
Also make sure ebitmap_init() is called on all entries before
policydb_destroy() can be called. Right now this is a no-op, because
both kvcalloc() and ebitmap_init() just zero out the whole struct, but
let's rather not rely on a specific implementation.
Reported-by: syzbot+a57b2aff60832666fc28@syzkaller.appspotmail.com
Fixes: acdf52d97f ("selinux: convert to kvmalloc")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <paul@paul-moore.com>
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Merge tag 'selinux-pr-20190312' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fixes from Paul Moore:
"Two small fixes for SELinux in v5.1: one adds a buffer length check to
the SELinux SCTP code, the other ensures that the SELinux labeling for
a NFS mount is not disabled if the filesystem is mounted twice"
* tag 'selinux-pr-20190312' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
security/selinux: fix SECURITY_LSM_NATIVE_LABELS on reused superblock
selinux: add the missing walk_size + len check in selinux_sctp_bind_connect