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CVE-2025-21947

Estado: ModificadaMedia (4.7)—

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

ksmbd: fix type confusion via race condition when using ipc_msg_send_request

req->handle is allocated using ksmbd_acquire_id(&ipc_ida), based on ida_alloc. req->handle from ksmbd_ipc_login_request and FSCTL_PIPE_TRANSCEIVE ioctl can be same and it could lead to type confusion between messages, resulting in access to unexpected parts of memory after an incorrect delivery. ksmbd check type of ipc response but missing add continue to check next ipc reponse.

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).

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 type confusion via race condition when using ipc_msg_send_request\n\nreq->handle is allocated using ksmbd_acquire_id(&ipc_ida), based on\nida_alloc. req->handle from ksmbd_ipc_login_request and\nFSCTL_PIPE_TRANSCEIVE ioctl can be same and it could lead to type confusion\nbetween messages, resulting in access to unexpected parts of memory after\nan incorrect delivery. ksmbd check type of ipc response but missing add\ncontinue to check next ipc reponse."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: se corrige la confusión de tipos mediante una condición de ejecución cuando se usa ipc_msg_send_request. req->handle se asigna usando ksmbd_acquire_id(&ipc_ida), según ida_alloc. req->handle de ksmbd_ipc_login_request y FSCTL_PIPE_TRANSCEIVE ioctl puede ser el mismo y podría generar una confusión de tipos entre mensajes, lo que resulta en el acceso a partes inesperadas de la memoria después de una entrega incorrecta. ksmbd verifica el tipo de respuesta de ipc pero falta agregar continuar para verificar la siguiente respuesta de ipc."
    }
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  "lastModified": "2026-06-17T08:44:40.880",
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