CVE-2025-23156

Estado: ModificadaAlta (7.1)—

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

media: venus: hfi_parser: refactor hfi packet parsing logic

words_count denotes the number of words in total payload, while data points to payload of various property within it. When words_count reaches last word, data can access memory beyond the total payload. This can lead to OOB access. With this patch, the utility api for handling individual properties now returns the size of data consumed. Accordingly remaining bytes are calculated before parsing the payload, thereby eliminates the OOB access possibilities.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Puntuación base: 7.1

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: 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 principalT1005 Data from Local Systemcollection65 %

Vulnerabilidad OOB en kernel Linux (AV:L, PR:L, sin UI) permite escalada de privilegios leyendo memoria más allá del payload, acceso a datos confidenciales y potencial denegación de servicio.

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 Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software Data Loss Prevention

Tecnologías afectadas (2)

Debian — Debian Linux Linux — Linux Kernel

CWE

CWE-125

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: venus: hfi_parser: refactor hfi packet parsing logic\n\nwords_count denotes the number of words in total payload, while data\npoints to payload of various property within it. When words_count\nreaches last word, data can access memory beyond the total payload. This\ncan lead to OOB access. With this patch, the utility api for handling\nindividual properties now returns the size of data consumed. Accordingly\nremaining bytes are calculated before parsing the payload, thereby\neliminates the OOB access possibilities."
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: venus: hfi_parser: refactorización de la lógica de análisis de paquetes HFI. words_count indica el número de palabras en el payload total, mientras que data apunta al payload de varias propiedades dentro de ella. Cuando words_count alcanza la última palabra, data puede acceder a memoria más allá de payload total. Esto puede provocar accesos fuera de banda (OOB). Con este parche, la API de utilidad para gestionar propiedades individuales ahora devuelve el tamaño de los datos consumidos. Por consiguiente, los bytes restantes se calculan antes de analizar el payload, eliminando así las posibilidades de accesos fuera de banda (OOB)."
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