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CVE-2026-43262

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: gfs2: fiemap page fault fix In gfs2_fiemap(), we are calling iomap_fiemap() while holding the inode glock.

Published May 6, 2026CWE-401EPSS 0.16%

Overview

CVE-2026-43262 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:

gfs2: fiemap page fault fix

In gfs2_fiemap(), we are calling iomap_fiemap() while holding the inode

glock. This can lead to recursive glock taking if the fiemap buffer is

memory mapped to the same inode and accessing it triggers a page fault.

Fix by disabling page faults for iomap_fiemap() and faulting in the

buffer by hand if necessary.

Fixes xfstest generic/742.

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/2e121c53b581e40397ae08090a7af4ed10781fbcRefgit.kernel.org/stable/c/5d2c4f182ea8516de8682e2b60411c03df00e3eaRefgit.kernel.org/stable/c/5d5d9ec957bfa1eb2b05861c19f5d701dd006db7Refgit.kernel.org/stable/c/9d15fee888f0e8938c9aeed71ec9c2cbba0c88abRefgit.kernel.org/stable/c/cead3bebf3e318578b8a86a5472015d713d2a8a8Refgit.kernel.org/stable/c/e411d74cc5ba290f85d0dd5e4d1df8f1d6d975d2Refgit.kernel.org/stable/c/e428670cfb2993d8c224effd076242ca6b0950de

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43262?

CVE-2026-43262 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-2026-43262?

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-2026-43262?

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-2026-43262?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43262 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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