CVE-2023-52596

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39ede	Mailing List Patch
https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489	Mailing List Patch
https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843	Mailing List Patch
https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39ede	Mailing List Patch
https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489	Mailing List Patch
https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843	Mailing List Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-03-06 07:15

Updated : 2025-02-14 16:40

NVD link : CVE-2023-52596

Mitre link : CVE-2023-52596

CVE.ORG link : CVE-2023-52596

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-787

Out-of-bounds Write

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