CVE-2025-38258
MEDIUM severity · CVSS 5.5 · CWE-401
5.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/490a43d07f1663d827e802720d30cbc0494e4f81 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/490a43d07f1663d827e802720d30cbc0494e4f81Patch
- https://git.kernel.org/stable/c/4a158ac0538dd5695eeaa00aa0720d711f3e4ef1Patch
- https://git.kernel.org/stable/c/4f489fe6afb395dbc79840efa3c05440b760d883Patch
- https://git.kernel.org/stable/c/c5d5b0047b0c0f304608f3824139f7bd34c48413Patch