CVE-2025-68349

Estado: AplazadaAlta (7.5)—

In the Linux kernel, the following vulnerability has been resolved:

NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid

Fixes a crash when layout is null during this call stack:

pnfs_set_layoutcommit relies on the lseg refcount to keep the layout around. Need to clear NFS_INO_LAYOUTCOMMIT otherwise we might attempt to reference a null layout.

Detalles técnicos trazas, registros y código del informe original

write_inode
    -> nfs4_write_inode
        -> pnfs_layoutcommit_inode

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.69%
Percentil entre todas las CVEs puntuadas: 51
Fecha de la puntuación: 6/10/2026

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access45 %
Impacto principalT1499.004 Application or System Exploitationimpact75 %

AV:N/AC:L/PR:N permite explotación remota sin privilegios (T1190). A:H indica disponibilidad: crash del kernel = DoS de aplicación (T1499.004).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid\n\nFixes a crash when layout is null during this call stack:\n\nwrite_inode\n    -> nfs4_write_inode\n        -> pnfs_layoutcommit_inode\n\npnfs_set_layoutcommit relies on the lseg refcount to keep the layout\naround. Need to clear NFS_INO_LAYOUTCOMMIT otherwise we might attempt\nto reference a null layout."
    }
  ],
  "lastModified": "2026-07-30T06:24:39.560",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}