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CVE-2026-31653

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: dealloc repeat_call_control if damon_call() fails damon_call() for repeat_call_control of DAMON_SYSFS could fai…

Published Apr 24, 2026EPSS 0.16%

Overview

CVE-2026-31653 is a medium-severity vulnerability. It was published on April 24, 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:

mm/damon/sysfs: dealloc repeat_call_control if damon_call() fails

damon_call() for repeat_call_control of DAMON_SYSFS could fail if somehow

the kdamond is stopped before the damon_call(). It could happen, for

example, when te damon context was made for monitroing of a virtual

address processes, and the process is terminated immediately, before the

damon_call() invocation. In the case, the dyanmically allocated

repeat_call_control is not deallocated and leaked.

Fix the leak by deallocating the repeat_call_control under the

damon_call() failure.

This issue is discovered by sashiko [1].

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/0199390a6b92fc21860e1b858abf525c7e73b956Refgit.kernel.org/stable/c/0655f5cf1735508394ef8af98ddcfab3ac1c1cc5Refgit.kernel.org/stable/c/b9dadf026a9fb681ed32a0646adc10ab485bf3b1

How CyberStrike helps

Frequently asked questions

What is CVE-2026-31653?

CVE-2026-31653 is a medium-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-31653?

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-2026-31653?

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-2026-31653?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-31653 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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