FKIE_CVE-2025-38258

Vulnerability from fkie_nvd - Published: 2025-07-09 11:15 - Updated: 2025-11-19 20:52
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/490a43d07f1663d827e802720d30cbc0494e4f81Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a158ac0538dd5695eeaa00aa0720d711f3e4ef1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f489fe6afb395dbc79840efa3c05440b760d883Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5d5b0047b0c0f304608f3824139f7bd34c48413Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter-\u003ememcg_path on write\n\nmemcg_path_store() assigns a newly allocated memory buffer to\nfilter-\u003ememcg_path, without deallocating the previously allocated and\nassigned memory buffer.  As a result, users can leak kernel memory by\ncontinuously writing a data to memcg_path DAMOS sysfs file.  Fix the leak\nby deallocating the previously set memory buffer."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/damon/sysfs-schemes: la liberaci\u00f3n de la antigua ruta damon_sysfs_scheme_filter-\u0026gt;memcg_path al escribir en memcg_path_store() asigna un b\u00fafer de memoria reci\u00e9n asignado a filter-\u0026gt;memcg_path, sin liberar el b\u00fafer de memoria previamente asignado. Como resultado, los usuarios pueden perder memoria del kernel escribiendo continuamente datos en el archivo sysfs de DAMOS, memcg_path. Para solucionar la p\u00e9rdida, libere el b\u00fafer de memoria previamente asignado."
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  "id": "CVE-2025-38258",
  "lastModified": "2025-11-19T20:52:51.900",
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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