CVE-2025-39853
Estado: ModificadaAlta (7.1)—
In the Linux kernel, the following vulnerability has been resolved:
i40e: Fix potential invalid access when MAC list is empty
list_first_entry() never returns NULL - if the list is empty, it still returns a pointer to an invalid object, leading to potential invalid memory access when dereferenced.
Fix this by using list_first_entry_or_null instead of list_first_entry.
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: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- 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.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation85 % - Impacto principal
T1059Command and Scripting Interpreterexecution75 % - Impacto secundario
T1499.004Application or System Exploitationimpact60 %
Vulnerabilidad local (AV:L/PR:L) en kernel Linux sin interacción del usuario. List_first_entry() accede a memoria inválida, permitiendo escalada o ejecución de código con privilegios de kernel (C:H, A:H). Afecta al driver i40e.
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
Tecnologías afectadas (2)
CWE
- CWE-125
Referencias
- https://git.kernel.org/stable/c/1eadabcf5623f1237a539b16586b4ed8ac8dffcd
- https://git.kernel.org/stable/c/3c6fb929afa313d9d11f780451d113f73922fe5d
- https://git.kernel.org/stable/c/66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf
- https://git.kernel.org/stable/c/971feafe157afac443027acdc235badc6838560b
- https://git.kernel.org/stable/c/9c21fc4cebd44dd21016c61261a683af390343f8
- https://git.kernel.org/stable/c/a556f06338e1d5a85af0e32ecb46e365547f92b9
- https://git.kernel.org/stable/c/e2a5e74879f9b494bbd66fa93f355feacde450c7
- https://git.kernel.org/stable/c/fb216d980fae6561c7c70af8ef826faf059c6515
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
JSON original (NVD)
Mostrar
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