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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths\n\nWhen processing mount options, efivarfs allocates efivarfs_fs_info (sfi)\nearly in fs_context initialization. However, sfi is associated with the\nsuperblock and typically freed when the superblock is destroyed. If the\nfs_context is released (final put) before fill_super is called\u2014such as\non error paths or during reconfiguration\u2014the sfi structure would leak,\nas ownership never transfers to the superblock.\n\nImplement the .free callback in efivarfs_context_ops to ensure any\nallocated sfi is properly freed if the fs_context is torn down before\nfill_super, preventing this memory leak."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: efivarfs: corrige la p\u00e9rdida de memoria de efivarfs_fs_info en las rutas de error de fs_context Al procesar las opciones de montaje, efivarfs asigna efivarfs_fs_info (sfi) al principio de la inicializaci\u00f3n de fs_context. Sin embargo, sfi est\u00e1 asociado al superbloque y normalmente se libera cuando este se destruye. Si se libera fs_context (posici\u00f3n final) antes de llamar a fill_super (como en rutas de error o durante la reconfiguraci\u00f3n), la estructura sfi se filtrar\u00eda, ya que la propiedad nunca se transfiere al superbloque. Implementa la devoluci\u00f3n de llamada .free en efivarfs_context_ops para garantizar que cualquier sfi asignado se libere correctamente si fs_context se derriba antes que fill_super, lo que previene esta p\u00e9rdida de memoria."
    }
  ],
  "id": "CVE-2025-38549",
  "lastModified": "2025-11-18T18:10:21.467",
  "metrics": {
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      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2025-08-16T12:15:31.003",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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  "vulnStatus": "Analyzed",
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          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}