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CVE-2023-52596

5.5 · MEDIUM

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…

Published Mar 6, 2024CWE-787EPSS 0.23%

Overview

CVE-2023-52596 is a medium-severity vulnerability. It was published on March 6, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39edeRefgit.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489Refgit.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843Refgit.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39edeRefgit.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489Refgit.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52596?

CVE-2023-52596 is a medium-severity vulnerability. It was published on March 6, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52596?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52596?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-52596?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52596 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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