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Jia-Ju Bai 448deb13ab fs: nfs: Fix possible null-pointer dereferences in encode_attrs() 
[ Upstream commit e2751463ea ]

In encode_attrs(), there is an if statement on line 1145 to check
whether label is NULL:
    if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL))

When label is NULL, it is used on lines 1178-1181:
    *p++ = cpu_to_be32(label->lfs);
    *p++ = cpu_to_be32(label->pi);
    *p++ = cpu_to_be32(label->len);
    p = xdr_encode_opaque_fixed(p, label->label, label->len);

To fix these bugs, label is checked before being used.

These bugs are found by a static analysis tool STCheck written by us.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-11 18:21:11 +02:00
arch arm64: cpufeature: Detect SSBS and advertise to userspace 2019-10-11 18:21:10 +02:00
block block: mq-deadline: Fix queue restart handling 2019-10-07 18:57:19 +02:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto crypto: skcipher - Unmap pages after an external error 2019-10-11 18:20:52 +02:00
Documentation ovl: fix regression caused by overlapping layers detection 2019-09-21 07:17:14 +02:00
drivers s390/cio: avoid calling strlen on null pointer 2019-10-11 18:21:08 +02:00
firmware
fs fs: nfs: Fix possible null-pointer dereferences in encode_attrs() 2019-10-11 18:21:11 +02:00
include ASoC: Define a set of DAPM pre/post-up events 2019-10-11 18:20:47 +02:00
init initramfs: don't free a non-existent initrd 2019-10-01 08:26:09 +02:00
ipc ipc/mqueue.c: only perform resource calculation if user valid 2019-08-06 19:06:52 +02:00
kernel Revert "locking/pvqspinlock: Don't wait if vCPU is preempted" 2019-10-11 18:21:06 +02:00
lib kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K 2019-10-07 18:57:17 +02:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm usercopy: Avoid HIGHMEM pfn warning 2019-10-11 18:20:58 +02:00
net cfg80211: initialize on-stack chandefs 2019-10-11 18:21:09 +02:00
samples samples, bpf: suppress compiler warning 2019-07-14 08:11:04 +02:00
scripts randstruct: Check member structs in is_pure_ops_struct() 2019-10-05 13:10:02 +02:00
security ima: fix freeing ongoing ahash_request 2019-10-11 18:21:11 +02:00
sound ASoC: sgtl5000: Improve VAG power and mute control 2019-10-11 18:20:47 +02:00
tools perf stat: Fix a segmentation fault when using repeat forever 2019-10-11 18:21:01 +02:00
usr kbuild: clean compressed initramfs image 2019-10-07 18:57:16 +02:00
virt KVM: coalesced_mmio: add bounds checking 2019-09-21 07:16:44 +02:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
Kbuild
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS platform/x86: Add Intel AtomISP2 dummy / power-management driver 2019-04-20 09:16:02 +02:00
Makefile Linux 4.19.78 2019-10-07 18:57:29 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.