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CVE-2026-23366

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: drm/client: Do not destroy NULL modes 'modes' in drm_client_modeset_probe may fail to kcalloc.

Published Mar 25, 2026CWE-476EPSS 0.12%

Overview

CVE-2026-23366 is a medium-severity vulnerability. It was published on March 25, 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:

drm/client: Do not destroy NULL modes

'modes' in drm_client_modeset_probe may fail to kcalloc. If this

occurs, we jump to 'out', calling modes_destroy on it, which

dereferences it. This may result in a NULL pointer dereference in the

error case. Prevent 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/4e3ca5f82346cc23c0a71f1ceb006115ff6b0745Refgit.kernel.org/stable/c/9aa3e33f0c7f2679ac599a09e3102c8f716a6321Refgit.kernel.org/stable/c/c601fd5414315fc515f746b499110e46272e7243

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23366?

CVE-2026-23366 is a medium-severity vulnerability. It was published on March 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-23366?

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-2026-23366?

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-2026-23366?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23366 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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