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CVE-2024-57925

Estado: ModificadaAlta (7.1)—

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

ksmbd: fix a missing return value check bug

In the smb2_send_interim_resp(), if ksmbd_alloc_work_struct() fails to allocate a node, it returns a NULL pointer to the in_work pointer. This can lead to an illegal memory write of in_work->response_buf when allocate_interim_rsp_buf() attempts to perform a kzalloc() on it.

To address this issue, incorporating a check for the return value of ksmbd_alloc_work_struct() ensures that the function returns immediately upon allocation failure, thereby preventing the aforementioned illegal memory access.

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.

Vulnerabilidad local (AV:L, PR:L) en ksmbd sin interacción del usuario que permite escritura de memoria ilegal tras fallo de asignación, causando corrupción de datos o denegación de servicio del kernel.

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 PreventionEncrypt Sensitive InformationApplication Isolation and SandboxingExploit Protection

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix a missing return value check bug\n\nIn the smb2_send_interim_resp(), if ksmbd_alloc_work_struct()\nfails to allocate a node, it returns a NULL pointer to the\nin_work pointer. This can lead to an illegal memory write of\nin_work->response_buf when allocate_interim_rsp_buf() attempts\nto perform a kzalloc() on it.\n\nTo address this issue, incorporating a check for the return\nvalue of ksmbd_alloc_work_struct() ensures that the function\nreturns immediately upon allocation failure, thereby preventing\nthe aforementioned illegal memory access."
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