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CVE-2025-38659

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: gfs2: No more self recovery When a node withdraws and it turns out that it is the only node that has the filesystem mounted, gf…

Published Aug 22, 2025CWE-476EPSS 0.17%

Overview

CVE-2025-38659 is a high-severity vulnerability. It was published on August 22, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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: No more self recovery

When a node withdraws and it turns out that it is the only node that has

the filesystem mounted, gfs2 currently tries to replay the local journal

to bring the filesystem back into a consistent state. Not only is that

a very bad idea, it has also never worked because gfs2_recover_func()

will refuse to do anything during a withdraw.

However, before even getting to this point, gfs2_recover_func()

dereferences sdp->sd_jdesc->jd_inode. This was a use-after-free before

commit 04133b607a78 ("gfs2: Prevent double iput for journal on error")

and is a NULL pointer dereference since then.

Simply get rid of self recovery to fix 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/1a91ba12abef628b43cada87478328274d988e88Refgit.kernel.org/stable/c/6784367b2f3cd7b89103de35764f37f152590dbdRefgit.kernel.org/stable/c/69cf5699a402ee7ae1be53954dc2ae652c0a053cRefgit.kernel.org/stable/c/6ebe17b359bead383581f729e43f591c1c36e159Refgit.kernel.org/stable/c/97c94c7dbddc34d353c83b541b3decabf98d04afRefgit.kernel.org/stable/c/deb016c1669002e48c431d6fd32ea1c20ef41756Refgit.kernel.org/stable/c/f5426ffbec971a8f7346a57392d3a901bdee5a9b

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38659?

CVE-2025-38659 is a high-severity vulnerability. It was published on August 22, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38659?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38659?

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-2025-38659?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38659 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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