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CVE-2026-43168

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix reflink preserve cleanup issue commit c06c303832ec ("ocfs2: fix xattr array entry __counted_by error") doesn't handl…

Published May 6, 2026EPSS 0.16%

Overview

CVE-2026-43168 is a medium-severity vulnerability. It was published on May 6, 2026 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:

ocfs2: fix reflink preserve cleanup issue

commit c06c303832ec ("ocfs2: fix xattr array entry __counted_by error")

doesn't handle all cases and the cleanup job for preserved xattr entries

still has bug:

- the 'last' pointer should be shifted by one unit after cleanup

an array entry.

- current code logic doesn't cleanup the first entry when xh_count is 1.

Note, commit c06c303832ec is also a bug fix for 0fe9b66c65f3.

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/02acc9f72365e50eb45a56b7dacb9114ca3b503cRefgit.kernel.org/stable/c/2f4daccd9d9b8b2952df7878df8c2e8ba6439398Refgit.kernel.org/stable/c/3bdc3766aafb052aef4baadef455a84c1c0a059dRefgit.kernel.org/stable/c/5138c936c2c82c9be8883921854bc6f7e1177d8cRefgit.kernel.org/stable/c/8ff329353134280b203cb2bce95311cb8f7cbd8aRefgit.kernel.org/stable/c/b2952dbeac2c3c527cb0519d5ffaeb95b062466aRefgit.kernel.org/stable/c/bb273b68c1719c2925e05557f7e7099edb066680Refgit.kernel.org/stable/c/c44d86ca949cb1e5566ad14510cc26fa1a17e2d8

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43168?

CVE-2026-43168 is a medium-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-43168?

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-2026-43168?

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-2026-43168?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43168 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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