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CVE-2023-53091

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ext4: update s_journal_inum if it changes after journal replay When mounting a crafted ext4 image, s_journal_inum may change af…

Published May 2, 2025CWE-476EPSS 0.21%

Overview

CVE-2023-53091 is a medium-severity vulnerability. It was published on May 2, 2025 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:

ext4: update s_journal_inum if it changes after journal replay

When mounting a crafted ext4 image, s_journal_inum may change after journal

replay, which is obviously unreasonable because we have successfully loaded

and replayed the journal through the old s_journal_inum. And the new

s_journal_inum bypasses some of the checks in ext4_get_journal(), which

may trigger a null pointer dereference problem. So if s_journal_inum

changes after the journal replay, we ignore the change, and rewrite the

current journal_inum to the superblock.

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/3039d8b8692408438a618fac2776b629852663c3Refgit.kernel.org/stable/c/499fef2030fb754c68b1c7cb3a799a3bc1d0d925Refgit.kernel.org/stable/c/70e66bdeae4d0f7c8e87762f425b68aedd5e8955Refgit.kernel.org/stable/c/ee0c5277d4fab920bd31345c49e193ecede9ecef

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53091?

CVE-2023-53091 is a medium-severity vulnerability. It was published on May 2, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-53091?

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-2023-53091?

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-2023-53091?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53091 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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