CVE-2025-23158

Estado: ModificadaAlta (7.8)—

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

media: venus: hfi: add check to handle incorrect queue size

qsize represents size of shared queued between driver and video firmware. Firmware can modify this value to an invalid large value. In such situation, empty_space will be bigger than the space actually available. Since new_wr_idx is not checked, so the following code will result in an OOB write. ... qsize = qhdr->q_size

if (wr_idx >= rd_idx) empty_space = qsize - (wr_idx - rd_idx) .... if (new_wr_idx < qsize) { memcpy(wr_ptr, packet, dwords << 2) --> OOB write

Add check to ensure qsize is within the allocated size while reading and writing packets into the queue.

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: 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 principalT1059 Command and Scripting Interpreterexecution75 %
Impacto secundarioT1565 Data Manipulationimpact70 %

Acceso local sin interacción del usuario (AV:L, PR:L, UI:N) permite escalada de privilegios mediante escritura fuera de límites en memoria compartida con firmware Venus, resultando en ejecución de código e integridad comprometida.

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 Restrict File and Directory Permissions Privileged Account Management Remote Data Storage

Tecnologías afectadas (2)

Debian — Debian Linux Linux — Linux Kernel

CWE

CWE-787

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: venus: hfi: add check to handle incorrect queue size\n\nqsize represents size of shared queued between driver and video\nfirmware. Firmware can modify this value to an invalid large value. In\nsuch situation, empty_space will be bigger than the space actually\navailable. Since new_wr_idx is not checked, so the following code will\nresult in an OOB write.\n...\nqsize = qhdr->q_size\n\nif (wr_idx >= rd_idx)\n empty_space = qsize - (wr_idx - rd_idx)\n....\nif (new_wr_idx < qsize) {\n memcpy(wr_ptr, packet, dwords << 2) --> OOB write\n\nAdd check to ensure qsize is within the allocated size while\nreading and writing packets into the queue."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: venus: hfi: se ha añadido una comprobación para gestionar el tamaño incorrecto de queue size qsize representa el tamaño de la cola compartida entre el controlador y el firmware de vídeo. El firmware puede modificar este valor a un valor grande no válido. En tal situación, el espacio vacío será mayor que el espacio realmente disponible. Dado que new_wr_idx no se comprueba, el siguiente código resultará en una escritura fuera de banda (OOB). ... qsize = qhdr-&gt;q_size if (wr_idx &gt;= rd_idx) empty_space = qsize - (wr_idx - rd_idx) .... if (new_wr_idx &lt; qsize) { memcpy(wr_ptr, packet, dwords &lt;&lt; 2) --&gt; Escritura fuera de banda (OOB). Se ha añadido una comprobación para garantizar que qsize se encuentre dentro del tamaño asignado al leer y escribir paquetes en la cola."
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