CVE-2023-52596
Assigner: Linux
Published: 2024-03-06T06:45:26.094Z
State: PUBLISHED
descriptions: value: In the Linux kernel, the following vulnerability has been resolved:

sysctl: Fix out of bounds access for empty sysctl registers

When registering tables to the sysctl subsystem there is a check to see
if header is a permanently empty directory (used for mounts). This check
evaluates the first element of the ctl_table. This results in an out of
bounds evaluation when registering empty directories.

The function register_sysctl_mount_point now passes a ctl_table of size
1 instead of size 0. It now relies solely on the type to identify
a permanently empty register.

Make sure that the ctl_table has at least one element before testing for
permanent emptiness.
affected: product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 1da177e4c3f4
lessThan: 15893975e9e3
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: 2ae7081bc101
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: 315552310c7d
status: affected
versionType: git
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 6.6.16
lessThanOrEqual: 6.6.*
status: unaffected
versionType: custom
version: 6.7.4
lessThanOrEqual: 6.7.*
status: unaffected
versionType: custom
version: 6.8
lessThanOrEqual: *
status: unaffected
versionType: original_commit_for_fix
title: sysctl: Fix out of bounds access for empty sysctl registers
x_generator: engine: bippy-8df59b4913de