CVE-2025-38258

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.

Reserved 2025-04-16 | Published 2025-07-09 | Updated 2025-07-09 | Assigner Linux

Product status

Default status
unaffected

7ee161f18b5da5170b5d6a51aace49d312099128 before 490a43d07f1663d827e802720d30cbc0494e4f81
affected

7ee161f18b5da5170b5d6a51aace49d312099128 before c5d5b0047b0c0f304608f3824139f7bd34c48413
affected

7ee161f18b5da5170b5d6a51aace49d312099128 before 4a158ac0538dd5695eeaa00aa0720d711f3e4ef1
affected

7ee161f18b5da5170b5d6a51aace49d312099128 before 4f489fe6afb395dbc79840efa3c05440b760d883
affected

Default status
affected

6.3
affected

Any version before 6.3
unaffected

6.6.96
unaffected

6.12.36
unaffected

6.15.5
unaffected

6.16-rc4
unaffected

References

git.kernel.org/...c/490a43d07f1663d827e802720d30cbc0494e4f81

git.kernel.org/...c/c5d5b0047b0c0f304608f3824139f7bd34c48413

git.kernel.org/...c/4a158ac0538dd5695eeaa00aa0720d711f3e4ef1

git.kernel.org/...c/4f489fe6afb395dbc79840efa3c05440b760d883

cve.org (CVE-2025-38258)

nvd.nist.gov (CVE-2025-38258)

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