CVE-2026-64382
Estado: AnalizadaAlta (8.8)—
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix double-free in SMB2_open() replay
A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_open_init() fails before the next send, cleanup retains the previous buffer type and frees that response again.
Reset response bookkeeping before each attempt to prevent the stale free.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.35%
- Percentil entre todas las CVEs puntuadas: 27
- 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
T1203Exploitation for Client Executionexecution75 % - Impacto principal
T1059Command and Scripting Interpreterexecution60 %
Vector CVSS con UI:R indica interacción del usuario (abrir archivo SMB preparado). CWE-415 (double-free) permite corrupción de memoria y ejecución de código. Kernel Linux vulnerable a través de cliente SMB.
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 (1)
CWE
- CWE-415
Referencias
- https://git.kernel.org/stable/c/02bc2896bdc3e29362d6e40d404006944a159c25
- https://git.kernel.org/stable/c/14498ff5ce0f272ce0ef988721413e06b7038972
- https://git.kernel.org/stable/c/3196b5192f246df4272072f61a2f4a3e9967f55d
- https://git.kernel.org/stable/c/b55e182f2324bc6a604c21a47aa6c448f719a532
- https://git.kernel.org/stable/c/ff2d30927bc3bf3c629f0768d2068096e64ef5ce
JSON original (NVD)
Mostrar
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