CVE-2025-38137

Estado: AnalizadaAlta (7.8)—

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

PCI/pwrctrl: Cancel outstanding rescan work when unregistering

It's possible to trigger use-after-free here by:

Cancel outstanding work to ensure it is finished before we allow our data structures to be cleaned up.

[bhelgaas: tidy commit log]

Detalles técnicos trazas, registros y código del informe original

  (a) forcing rescan_work_func() to take a long time and
  (b) utilizing a pwrctrl driver that may be unloaded for some reason

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 7
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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Impacto principalT1059 Command and Scripting Interpreterexecution65 %

Vulnerabilidad CWE-416 (use-after-free) en componente del kernel accesible con PR:L (usuario local). Permite ejecución de código arbitrario con privilegios elevados tras desencadenar race condition en rescan_work_func().

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

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Behavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-416

Referencias

JSON original (NVD)

Mostrar

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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/pwrctrl: Cancel outstanding rescan work when unregistering\n\nIt's possible to trigger use-after-free here by:\n\n  (a) forcing rescan_work_func() to take a long time and\n  (b) utilizing a pwrctrl driver that may be unloaded for some reason\n\nCancel outstanding work to ensure it is finished before we allow our data\nstructures to be cleaned up.\n\n[bhelgaas: tidy commit log]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PCI/pwrctrl: Cancelar el trabajo de reescaneo pendiente al anular el registro Es posible activar el use-after-free aquí: (a) forzando a rescan_work_func() a tomar mucho tiempo y (b) utilizando un controlador pwrctrl que puede estar descargado por alguna razón Cancelar el trabajo pendiente para asegurar que esté terminado antes de que permitamos que se limpien nuestras estructuras de datos. [bhelgaas: tidy commit log]"
    }
  ],
  "lastModified": "2026-06-17T09:16:07.813",
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