kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-22 19:14:51 +00:00
Code Issues Releases Packages Activity
No description
1,321,902 commits 117 branches 5,803 tags 5.7 GiB
  • C 96.8%
  • Assembly 0.9%
  • Rust 0.7%
  • Shell 0.6%
  • Python 0.5%
  • Other 0.3%
Find a file
Breno Leitao 70165dc3ec crypto: sha256 - fix crash at kexec 
Loading a large (~2.1G) files with kexec crashes the host with when
running:

  # kexec --load kernel --initrd initrd_with_2G_or_more

  UBSAN: signed-integer-overflow in ./include/crypto/sha256_base.h:64:19
  34152083 * 64 cannot be represented in type 'int'
  ...
  BUG: unable to handle page fault for address: ff9fffff83b624c0
  sha256_update (lib/crypto/sha256.c:137)
  crypto_sha256_update (crypto/sha256_generic.c:40)
  kexec_calculate_store_digests (kernel/kexec_file.c:769)
  __se_sys_kexec_file_load (kernel/kexec_file.c:397 kernel/kexec_file.c:332)
  ...

(Line numbers based on commit da274362a7 ("Linux 6.12.49")

This started happening after commit f4da7afe07
("kexec_file: increase maximum file size to 4G") that landed in v6.0,
which increased the file size for kexec.

This is not happening upstream (v6.16+), given that `block` type was
upgraded from "int" to "size_t" in commit 74a43a2cf5 ("crypto:
lib/sha256 - Move partial block handling out")

Upgrade the block type similar to the commit above, avoiding hitting the
overflow.

This patch is only suitable for the stable tree, and before 6.16, which
got commit 74a43a2cf5 ("crypto: lib/sha256 - Move partial block
handling out"). This is not required before f4da7afe07 ("kexec_file:
increase maximum file size to 4G"). In other words, this fix is required
between versions v6.0 and v6.16.

Signed-off-by: Breno Leitao <leitao@debian.org>
Fixes: f4da7afe07 ("kexec_file: increase maximum file size to 4G") # Before v6.16
Reported-by: Michael van der Westhuizen <rmikey@meta.com>
Reported-by: Tobias Fleig <tfleig@meta.com>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-10-06 11:17:51 +02:00
arch arm64: dts: marvell: cn9132-clearfog: fix multi-lane pci x2 and x4 ports 2025-10-02 13:44:14 +02:00
block block: add a queue_limits_commit_update_frozen helper 2025-09-09 18:58:24 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: af_alg - Set merge to zero early in af_alg_sendmsg 2025-09-25 11:13:49 +02:00
Documentation platform/x86: lg-laptop: Fix WMAB call in fan_mode_store() 2025-10-02 13:44:12 +02:00
drivers drm/i915/backlight: Return immediately when scale() finds invalid parameters 2025-10-02 13:44:15 +02:00
fs mm/hugetlb: fix folio is still mapped when deleted 2025-10-02 13:44:14 +02:00
include crypto: sha256 - fix crash at kexec 2025-10-06 11:17:51 +02:00
init io_uring: fix breakage in EXPERT menu 2025-08-15 12:13:32 +02:00
io_uring io_uring: fix incorrect io_kiocb reference in io_link_skb 2025-09-25 11:13:49 +02:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel tracing: dynevent: Add a missing lockdown check on dynevent 2025-10-02 13:44:13 +02:00
lib lib/sbitmap: convert shallow_depth from one word to the whole sbitmap 2025-08-20 18:30:49 +02:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm kmsan: fix out-of-bounds access to shadow memory 2025-10-02 13:44:14 +02:00
net nexthop: Forbid FDB status change while nexthop is in a group 2025-10-02 13:44:10 +02:00
rust rust: alloc: fix rusttest by providing Cmalloc::aligned_layout too 2025-08-28 16:31:13 +02:00
samples ftrace/samples: Fix function size computation 2025-09-19 16:35:44 +02:00
scripts rust: support Rust >= 1.91.0 target spec 2025-09-09 18:58:22 +02:00
security apparmor: Fix 8-byte alignment for initial dfa blob streams 2025-08-28 16:30:56 +02:00
sound ALSA: usb-audio: Add mute TLV for playback volumes on more devices 2025-10-02 13:44:07 +02:00
tools selftests: fib_nexthops: Fix creation of non-FDB nexthops 2025-10-02 13:44:10 +02:00
usr kbuild: hdrcheck: fix cross build with clang 2025-03-13 13:02:18 +01:00
virt KVM: Allow CPU to reschedule while setting per-page memory attributes 2025-07-17 18:37:08 +02:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-08-01 09:48:44 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: introduce .clippy.toml 2025-03-13 13:01:42 +01:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.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: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
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 MAINTAINERS: Update Alexey Makhalov's email address 2025-05-22 14:29:46 +02:00
Makefile Linux 6.12.50 2025-10-02 13:44:15 +02:00
README README: Fix spelling 2024-03-18 03:36:32 -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 reStructuredText 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.