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CVE-2025-37973

8.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation Currently during the multi-link element defr…

Published May 20, 2025CWE-125EPSS 0.24%

Overview

CVE-2025-37973 is a high-severity vulnerability. It was published on May 20, 2025 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation

Currently during the multi-link element defragmentation process, the

multi-link element length added to the total IEs length when calculating

the length of remaining IEs after the multi-link element in

cfg80211_defrag_mle(). This could lead to out-of-bounds access if the

multi-link element or its corresponding fragment elements are the last

elements in the IEs buffer.

To address this issue, correctly calculate the remaining IEs length by

deducting the multi-link element end offset from total IEs end offset.

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/023c1f2f0609218103cbcb48e0104b144d4a16dcRefgit.kernel.org/stable/c/73dde269a1a43e6b1aa92eba13ad2df58bfdd38eRefgit.kernel.org/stable/c/9423f6da825172b8dc60d4688ed3d147291c3be9Refgit.kernel.org/stable/c/e1c6d0c6199bd5f4cfc7a66ae7032b6e805f904d

How CyberStrike helps

Frequently asked questions

What is CVE-2025-37973?

CVE-2025-37973 is a high-severity vulnerability. It was published on May 20, 2025 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2025-37973?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-37973?

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-2025-37973?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-37973 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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