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CVE-2025-38258

Estado: AnalizadaMedia (5.5)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-38258",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "version": "6.3"
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              "version": "0",
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              "version": "6.16",
              "versionType": "original_commit_for_fix",
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          "programFiles": [
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          "defaultStatus": "affected"
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  "published": "2025-07-09T11:15:28.110",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/490a43d07f1663d827e802720d30cbc0494e4f81",
      "tags": [
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      "tags": [
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write\n\nmemcg_path_store() assigns a newly allocated memory buffer to\nfilter->memcg_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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/damon/sysfs-schemes: la liberación de la antigua ruta damon_sysfs_scheme_filter->memcg_path al escribir en memcg_path_store() asigna un búfer de memoria recién asignado a filter->memcg_path, sin liberar el búfer 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 pérdida, libere el búfer de memoria previamente asignado."
    }
  ],
  "lastModified": "2026-06-17T09:16:29.830",
  "configurations": [
    {
      "nodes": [
        {
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