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CVE-2023-52448

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump Syzkaller has reported a NULL pointer dereference when accessing rg…

Published Feb 22, 2024CWE-476EPSS 0.24%

Overview

CVE-2023-52448 is a medium-severity vulnerability. It was published on February 22, 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:

gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump

Syzkaller has reported a NULL pointer dereference when accessing

rgd->rd_rgl in gfs2_rgrp_dump(). This can happen when creating

rgd->rd_gl fails in read_rindex_entry(). Add a NULL pointer check in

gfs2_rgrp_dump() to prevent that.

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/067a7c48c2c70f05f9460d6f0e8423e234729f05Refgit.kernel.org/stable/c/5c28478af371a1c3fdb570ca67f110e1ae60fc37Refgit.kernel.org/stable/c/8877243beafa7c6bfc42022cbfdf9e39b25bd4faRefgit.kernel.org/stable/c/c323efd620c741168c8e0cc6fc0be04ab57e331aRefgit.kernel.org/stable/c/d69d7804cf9e2ba171a27e5f98bc266f13d0414aRefgit.kernel.org/stable/c/ee0586d73cbaf0e7058bc640d62a9daf2dfa9178Refgit.kernel.org/stable/c/efc8ef87ab9185a23d5676f2f7d986022d91bcdeRefgit.kernel.org/stable/c/067a7c48c2c70f05f9460d6f0e8423e234729f05Refgit.kernel.org/stable/c/5c28478af371a1c3fdb570ca67f110e1ae60fc37Refgit.kernel.org/stable/c/8877243beafa7c6bfc42022cbfdf9e39b25bd4fa

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52448?

CVE-2023-52448 is a medium-severity vulnerability. It was published on February 22, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52448?

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-2023-52448?

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-2023-52448?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52448 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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