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CVE-2025-38258

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write memcg_path_store() assigns a newly allocated me…

Published Jul 9, 2025CWE-401EPSS 0.17%

Overview

CVE-2025-38258 is a medium-severity vulnerability. It was published on July 9, 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:

mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write

memcg_path_store() assigns a newly allocated memory buffer to

filter->memcg_path, without deallocating the previously allocated and

assigned memory buffer. As a result, users can leak kernel memory by

continuously writing a data to memcg_path DAMOS sysfs file. Fix the leak

by deallocating the previously set memory buffer.

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/490a43d07f1663d827e802720d30cbc0494e4f81Refgit.kernel.org/stable/c/4a158ac0538dd5695eeaa00aa0720d711f3e4ef1Refgit.kernel.org/stable/c/4f489fe6afb395dbc79840efa3c05440b760d883Refgit.kernel.org/stable/c/c5d5b0047b0c0f304608f3824139f7bd34c48413

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38258?

CVE-2025-38258 is a medium-severity vulnerability. It was published on July 9, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-38258?

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-2025-38258?

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-2025-38258?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38258 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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