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CVE-2025-21940

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix NULL Pointer Dereference in KFD queue Through KFD IOCTL Fuzzing we encountered a NULL pointer derefrence when c…

Published Apr 1, 2025CWE-476EPSS 0.20%

Overview

CVE-2025-21940 is a medium-severity vulnerability. It was published on April 1, 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:

drm/amdkfd: Fix NULL Pointer Dereference in KFD queue

Through KFD IOCTL Fuzzing we encountered a NULL pointer derefrence

when calling kfd_queue_acquire_buffers.

(cherry picked from commit 049e5bf3c8406f87c3d8e1958e0a16804fa1d530)

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/33eb8041c5d6c19d46e7bfd23a031844336afd80Refgit.kernel.org/stable/c/c3cbeafb4e0001d9146df50b470885e02664f3c7Refgit.kernel.org/stable/c/fd617ea3b79d2116d53f76cdb5a3601c0ba6e42f

How CyberStrike helps

Frequently asked questions

What is CVE-2025-21940?

CVE-2025-21940 is a medium-severity vulnerability. It was published on April 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-21940?

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-2025-21940?

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-2025-21940?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-21940 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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