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CVE-2023-3867

Estado: ModificadaAlta (7.1)—

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

ksmbd: fix out of bounds read in smb2_sess_setup

ksmbd does not consider the case of that smb2 session setup is in compound request. If this is the second payload of the compound, OOB read issue occurs while processing the first payload in the smb2_sess_setup().

CVSS

Probabilidad de explotación (EPSS)

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.

AV:L/PR:L sin UI indica escalada local. Out-of-bounds read en ksmbd permite leer memoria del kernel (C:H) y causar DoS (A:H).

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 ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix out of bounds read in smb2_sess_setup\n\nksmbd does not consider the case of that smb2 session setup is\nin compound request. If this is the second payload of the compound,\nOOB read issue occurs while processing the first payload in\nthe smb2_sess_setup()."
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: se corrige una lectura fuera de los límites en smb2_sess_setup. ksmbd no considera el caso en el que la configuración de la sesión smb2 se encuentra en una solicitud compuesta. Si este es el segundo payload de la solicitud compuesta, se produce un problema de lectura fuera de los límites al procesar el primer payload en smb2_sess_setup()."
    }
  ],
  "lastModified": "2026-08-15T13:17:39.563",
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