CVE-2024-57798

Estado: ModificadaAlta (7.8)—

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

drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()

While receiving an MST up request message from one thread in drm_dp_mst_handle_up_req(), the MST topology could be removed from another thread via drm_dp_mst_topology_mgr_set_mst(false), freeing mst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL. This could lead to a NULL deref/use-after-free of mst_primary in drm_dp_mst_handle_up_req().

Avoid the above by holding a reference for mst_primary in drm_dp_mst_handle_up_req() while it's used.

Leer descripción completaMostrar menos

v2: Fix kfreeing the request if getting an mst_primary reference fails.

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: 0.22%
Percentil entre todas las CVEs puntuadas: 12
Fecha de la puntuación: 4/10/2026

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 de use-after-free (CWE-416) en kernel Linux con acceso local (AV:L) y privilegios requeridos (PR:L), permitiendo ejecución de código arbitrario tras escalada de privilegios.

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, CWE-476
CWE-476

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()\n\nWhile receiving an MST up request message from one thread in\ndrm_dp_mst_handle_up_req(), the MST topology could be removed from\nanother thread via drm_dp_mst_topology_mgr_set_mst(false), freeing\nmst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL.\nThis could lead to a NULL deref/use-after-free of mst_primary in\ndrm_dp_mst_handle_up_req().\n\nAvoid the above by holding a reference for mst_primary in\ndrm_dp_mst_handle_up_req() while it's used.\n\nv2: Fix kfreeing the request if getting an mst_primary reference fails."
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