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Roberto Sassu d667970564 KEYS: asymmetric: Copy sig and digest in public_key_verify_signature() 
commit c3d03e8e35 upstream.

Commit ac4e97abce ("scatterlist: sg_set_buf() argument must be in linear
mapping") checks that both the signature and the digest reside in the
linear mapping area.

However, more recently commit ba14a194a4 ("fork: Add generic vmalloced
stack support") made it possible to move the stack in the vmalloc area,
which is not contiguous, and thus not suitable for sg_set_buf() which needs
adjacent pages.

Always make a copy of the signature and digest in the same buffer used to
store the key and its parameters, and pass them to sg_init_one(). Prefer it
to conditionally doing the copy if necessary, to keep the code simple. The
buffer allocated with kmalloc() is in the linear mapping area.

Cc: stable@vger.kernel.org # 4.9.x
Fixes: ba14a194a4 ("fork: Add generic vmalloced stack support")
Link: https://lore.kernel.org/linux-integrity/Y4pIpxbjBdajymBJ@sol.localdomain/
Suggested-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-20 15:21:12 +08:00
arch KVM: x86: Account fastpath-only VM-Exits in vCPU stats 2023-08-20 15:21:12 +08:00
block block: fix revalidate performance regression 2023-08-20 15:21:10 +08:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2023-04-19 17:50:34 +08:00
crypto KEYS: asymmetric: Copy sig and digest in public_key_verify_signature() 2023-08-20 15:21:12 +08:00
Documentation dt-bindings: usb: snps,dwc3: Fix "snps,hsphy_interface" type 2023-08-20 15:21:09 +08:00
drivers serial: 8250_tegra: Fix an error handling path in tegra_uart_probe() 2023-08-20 15:21:11 +08:00
fs ksmbd: fix incorrect AllocationSize set in smb2_get_info 2023-08-20 15:21:12 +08:00
include media: dvb-core: Fix use-after-free due to race at dvb_register_device() 2023-08-20 15:21:05 +08:00
init kbuild: Add CONFIG_PAHOLE_VERSION 2023-04-19 17:59:33 +08:00
io_uring io_uring: avoid null-ptr-deref in io_arm_poll_handler 2023-04-19 18:00:57 +08:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2023-04-19 17:56:54 +08:00
kernel tracing/probe: trace_probe_primary_from_call(): checked list_first_entry 2023-08-20 15:21:11 +08:00
lib test_firmware: fix the memory leak of the allocated firmware buffer 2023-08-20 15:21:12 +08:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm writeback, cgroup: fix null-ptr-deref write in bdi_split_work_to_wbs 2023-06-06 18:34:53 +08:00
net atm: hide unused procfs functions 2023-08-20 15:21:07 +08:00
samples samples/bpf: Fix fout leak in hbm's run_bpf_prog 2023-06-06 18:39:30 +08:00
scripts recordmcount: Fix memory leaks in the uwrite function 2023-06-06 18:39:32 +08:00
security selinux: don't use make's grouped targets feature yet 2023-08-20 15:21:11 +08:00
sound ALSA: oss: avoid missing-prototype warnings 2023-08-20 15:21:07 +08:00
tools selftests: mptcp: sockopt: skip if MPTCP is not supported 2023-08-20 15:21:11 +08:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2023-04-19 17:44:58 +08:00
virt KVM: fix memoryleak in kvm_init() 2023-04-19 18:00:47 +08:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS platform/x86: Move existing HP drivers to a new hp subdir 2023-06-06 18:39:34 +08:00
Makefile Linux 5.15.115 2023-06-06 18:43:31 +08:00
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.