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Thore Sommer cd5d0d13a0 X.509: if signature is unsupported skip validation 
commit ef5b52a631 upstream.

When the hash algorithm for the signature is not available the digest size
is 0 and the signature in the certificate is marked as unsupported.

When validating a self-signed certificate, this needs to be checked,
because otherwise trying to validate the signature will fail with an
warning:

Loading compiled-in X.509 certificates
WARNING: CPU: 0 PID: 1 at crypto/rsa-pkcs1pad.c:537 \
pkcs1pad_verify+0x46/0x12c
...
Problem loading in-kernel X.509 certificate (-22)

Signed-off-by: Thore Sommer <public@thson.de>
Cc: stable@vger.kernel.org # v4.7+
Fixes: 6c2dc5ae4a ("X.509: Extract signature digest and make self-signed cert checks earlier")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2023-09-13 09:48:42 +02:00
Documentation scsi: core: Fix the scsi_set_resid() documentation 2023-09-13 09:48:38 +02:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
arch x86/sev: Make enc_dec_hypercall() accept a size instead of npages 2023-09-13 09:48:41 +02:00
block block: don't add or resize partition on the disk with GENHD_FL_NO_PART 2023-09-13 09:48:41 +02:00
certs KEYS: Add missing function documentation 2023-04-24 16:15:52 +03:00
crypto X.509: if signature is unsupported skip validation 2023-09-13 09:48:42 +02:00
drivers r8169: fix ASPM-related issues on a number of systems with NIC version from RTL8168h 2023-09-13 09:48:42 +02:00
fs dlm: fix plock lookup when using multiple lockspaces 2023-09-13 09:48:41 +02:00
include nvmem: core: Return NULL when no nvmem layout is found 2023-09-13 09:48:34 +02:00
init sched/psi: Select KERNFS as needed 2023-09-13 09:47:58 +02:00
io_uring io_uring: Don't set affinity on a dying sqpoll thread 2023-09-13 09:48:40 +02:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel bpf: Fix issue in verifying allow_ptr_leaks 2023-09-13 09:48:41 +02:00
lib XArray: Do not return sibling entries from xa_load() 2023-09-13 09:48:39 +02:00
mm mm/vmalloc: add a safer version of find_vm_area() for debug 2023-09-13 09:48:38 +02:00
net dccp: Fix out of bounds access in DCCP error handler 2023-09-13 09:48:41 +02:00
rust rust: macros: vtable: fix `HAS_*` redefinition (`gen_const_name`) 2023-08-23 17:32:36 +02:00
samples samples/bpf: fix broken map lookup probe 2023-09-13 09:48:06 +02:00
scripts scripts/gdb: fix 'lx-lsmod' show the wrong size 2023-09-13 09:48:05 +02:00
security smackfs: Prevent underflow in smk_set_cipso() 2023-09-13 09:48:16 +02:00
sound ALSA: hda/cirrus: Fix broken audio on hardware with two CS42L42 codecs. 2023-09-13 09:48:40 +02:00
tools XArray: Do not return sibling entries from xa_load() 2023-09-13 09:48:39 +02:00
usr initramfs: Check negative timestamp to prevent broken cpio archive 2023-04-16 17:37:01 +09:00
virt kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add() 2023-09-13 09:48:21 +02:00
.clang-format cxl for v6.4 2023-04-30 11:51:51 -07:00
.cocciconfig
…
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for *.dtso files 2023-02-26 15:28:23 +09:00
.gitignore linux-kselftest-kunit-6.4-rc1 2023-04-24 12:31:32 -07:00
.mailmap mailmap: add entries for Ben Dooks 2023-06-19 13:19:35 -07:00
.rustfmt.toml rust: add `.rustfmt.toml` 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: sctp: move Neil to CREDITS 2023-05-12 08:51:32 +01:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Networking fixes for 6.4-rc8, including fixes from ipsec, bpf, 2023-06-22 17:59:51 -07:00
Makefile kbuild: rust_is_available: remove -v option 2023-09-13 09:48:03 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.

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.