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Dan Carpenter 55cf2f4b94 binfmt_flat: Fix integer overflow bug on 32 bit systems 
Most of these sizes and counts are capped at 256MB so the math doesn't
result in an integer overflow.  The "relocs" count needs to be checked
as well.  Otherwise on 32bit systems the calculation of "full_data"
could be wrong.

	full_data = data_len + relocs * sizeof(unsigned long);

Fixes: c995ee28d2 ("binfmt_flat: prevent kernel dammage from corrupted executable headers")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Nicolas Pitre <npitre@baylibre.com>
Link: https://lore.kernel.org/r/5be17f6c-5338-43be-91ef-650153b975cb@stanley.mountain
Signed-off-by: Kees Cook <kees@kernel.org>
2025-01-10 08:49:05 -08:00
arch
block
certs
crypto
Documentation
drivers
fs binfmt_flat: Fix integer overflow bug on 32 bit systems 2025-01-10 08:49:05 -08:00
include exec: fix up /proc/pid/comm in the execveat(AT_EMPTY_PATH) case 2024-12-16 16:54:00 -08:00
init
io_uring exec: Make sure task->comm is always NUL-terminated 2024-12-16 16:53:00 -08:00
ipc
kernel exec: Make sure task->comm is always NUL-terminated 2024-12-16 16:53:00 -08:00
lib
LICENSES
mm
net
rust
samples
scripts
security
sound
tools selftests/exec: add a test for execveat()'s comm 2024-12-16 16:55:02 -08:00
usr
virt
.clang-format
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: exec: Mark Kees as maintainer 2024-10-31 15:09:57 -07:00
Makefile Linux 6.12-rc2 2024-10-06 15:32:27 -07:00
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 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.