CVE-2025-37763

Estado: ModificadaAlta (7.8)—

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

drm/imagination: take paired job reference

For paired jobs, have the fragment job take a reference on the geometry job, so that the geometry job cannot be freed until the fragment job has finished with it.

The geometry job structure is accessed when the fragment job is being prepared by the GPU scheduler. Taking the reference prevents the geometry job being freed until the fragment job no longer requires it.

Fixes a use after free bug detected by KASAN:

Detalles técnicos trazas, registros y código del informe original

[  124.256386] BUG: KASAN: slab-use-after-free in pvr_queue_prepare_job+0x108/0x868 [powervr]
[  124.264893] Read of size 1 at addr ffff0000084cb960 by task kworker/u16:4/63

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: 0.21%
Percentil entre todas las CVEs puntuadas: 10
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 escalation85 %
Impacto principalT1059 Command and Scripting Interpreterexecution75 %

Vulnerabilidad local (AV:L, PR:L) de use-after-free (CWE-416) en el kernel Linux que permite ejecución de código con privilegios elevados tras explotar gestión incorrecta de referencias en jobs emparejados del scheduler GPU.

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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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: take paired job reference\n\nFor paired jobs, have the fragment job take a reference on the\ngeometry job, so that the geometry job cannot be freed until\nthe fragment job has finished with it.\n\nThe geometry job structure is accessed when the fragment job is being\nprepared by the GPU scheduler. Taking the reference prevents the\ngeometry job being freed until the fragment job no longer requires it.\n\nFixes a use after free bug detected by KASAN:\n\n[  124.256386] BUG: KASAN: slab-use-after-free in pvr_queue_prepare_job+0x108/0x868 [powervr]\n[  124.264893] Read of size 1 at addr ffff0000084cb960 by task kworker/u16:4/63"
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/imagination: toma de referencia de trabajo emparejado. Para trabajos emparejados, el trabajo de fragmento toma una referencia en el trabajo de geometría, de modo que este no pueda liberarse hasta que el trabajo de fragmento haya terminado con él. Se accede a la estructura del trabajo de geometría cuando el programador de GPU prepara el trabajo de fragmento. Tomar la referencia impide que el trabajo de geometría se libere hasta que el trabajo de fragmento ya no la necesite. Corrige un error de use-after-free detectado por KASAN: [124.256386] ERROR: KASAN: slab-use-after-free en pvr_queue_prepare_job+0x108/0x868 [powervr] [124.264893] Lectura de tamaño 1 en la dirección ffff0000084cb960 por la tarea kworker/u16:4/63"
    }
  ],
  "lastModified": "2026-07-30T06:22:19.560",
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