CVE-2025-38157

Estado: AnalizadaAlta (7.8)—

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

wifi: ath9k_htc: Abort software beacon handling if disabled

A malicious USB device can send a WMI_SWBA_EVENTID event from an ath9k_htc-managed device before beaconing has been enabled. This causes a device-by-zero error in the driver, leading to either a crash or an out of bounds read.

Prevent this by aborting the handling in ath9k_htc_swba() if beacons are not enabled.

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: 0.19%
Percentil entre todas las CVEs puntuadas: 8
Fecha de la puntuación: 5/10/2026

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 principalT1499.004 Application or System Exploitationimpact75 %
Impacto secundarioT1005 Data from Local Systemcollection60 %

Vulnerabilidad local (AV:L, PR:L) sin interacción que causa crash o lectura OOB mediante evento USB malicioso en driver ath9k_htc, permitiendo DoS y acceso a memoria del kernel.

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

Threat Intelligence Program Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (2)

Debian — Debian Linux Linux — Linux Kernel

CWE

CWE-787

Referencias

JSON original (NVD)

Mostrar

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k_htc: Abort software beacon handling if disabled\n\nA malicious USB device can send a WMI_SWBA_EVENTID event from an\nath9k_htc-managed device before beaconing has been enabled. This causes\na device-by-zero error in the driver, leading to either a crash or an\nout of bounds read.\n\nPrevent this by aborting the handling in ath9k_htc_swba() if beacons are\nnot enabled."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: ath9k_htc: Cancelar la gestión de balizas de software si está deshabilitada. Un dispositivo USB malicioso puede enviar un evento WMI_SWBA_EVENTID desde un dispositivo administrado por ath9k_htc antes de que se haya habilitado la baliza. Esto provoca un error de dispositivo por cero en el controlador, lo que provoca un bloqueo o una lectura fuera de los límites. Para evitarlo, cancele la gestión en ath9k_htc_swba() si las balizas no están habilitadas."
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