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Zhang Shurong e32b0ad436 fbdev: fix potential OOB read in fast_imageblit() 
[ Upstream commit c2d22806ae ]

There is a potential OOB read at fast_imageblit, for
"colortab[(*src >> 4)]" can become a negative value due to
"const char *s = image->data, *src".
This change makes sure the index for colortab always positive
or zero.

Similar commit:
https://patchwork.kernel.org/patch/11746067

Potential bug report:
https://groups.google.com/g/syzkaller-bugs/c/9ubBXKeKXf4/m/k-QXy4UgAAAJ

Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-08-30 16:31:52 +02:00
arch MIPS: cpu-features: Use boot_cpu_type for CPU type based features 2023-08-30 16:31:52 +02:00
block block: fix signed int overflow in Amiga partition support 2023-08-30 16:31:46 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-25 11:49:16 +02:00
crypto crypto: drbg - Only fail when jent is unavailable in FIPS mode 2023-05-17 11:13:13 +02:00
Documentation Documentation: security-bugs.rst: clarify CVE handling 2023-08-11 11:45:34 +02:00
drivers fbdev: fix potential OOB read in fast_imageblit() 2023-08-30 16:31:52 +02:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:21:29 +01:00
fs fs: dlm: fix mismatch of plock results from userspace 2023-08-30 16:31:51 +02:00
include net: do not allow gso_size to be set to GSO_BY_FRAGS 2023-08-30 16:31:49 +02:00
init init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init() 2023-08-08 19:49:18 +02:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:18:35 +01:00
kernel perf: Fix function pointer case 2023-08-11 11:45:36 +02:00
lib test_firmware: prevent race conditions by a correct implementation of locking 2023-08-30 16:31:50 +02:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm treewide: Remove uninitialized_var() usage 2023-08-11 11:45:01 +02:00
net net: xfrm: Amend XFRMA_SEC_CTX nla_policy structure 2023-08-30 16:31:50 +02:00
samples samples/bpf: Fix buffer overflow in tcp_basertt 2023-08-11 11:45:03 +02:00
scripts modpost: fix section mismatch message for R_ARM_{PC24,CALL,JUMP24} 2023-08-11 11:45:10 +02:00
security IMA: allow/fix UML builds 2023-08-30 16:31:43 +02:00
sound ALSA: usb-audio: Add support for Mythware XA001AU capture and playback interfaces. 2023-08-30 16:31:49 +02:00
tools selftests: mirror_gre_changes: Tighten up the TTL test match 2023-08-30 16:31:48 +02:00
usr initramfs: restore default compression behavior 2020-04-13 10:44:59 +02:00
virt KVM: arm64: vgic: Fix exit condition in scan_its_table() 2022-11-03 23:52:24 +09:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING
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 clocksource/drivers: Unify the names to timer-* format 2023-08-11 11:45:02 +02:00
Makefile Linux 4.19.292 2023-08-16 18:13:01 +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.