CVE-2024-57791

Estado: ModificadaAlta (7.5)—

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

net/smc: check return value of sock_recvmsg when draining clc data

When receiving clc msg, the field length in smc_clc_msg_hdr indicates the length of msg should be received from network and the value should not be fully trusted as it is from the network. Once the value of length exceeds the value of buflen in function smc_clc_wait_msg it may run into deadloop when trying to drain the remaining data exceeding buflen.

This patch checks the return value of sock_recvmsg when draining data in case of deadloop in draining.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.77%
Percentil entre todas las CVEs puntuadas: 54
Fecha de la puntuación: 3/10/2026

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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access60 %
Impacto principalT1499 Endpoint Denial of Serviceimpact55 %

Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

NVD-CWE-noinfo

Referencias

JSON original (NVD)

Mostrar

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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: check return value of sock_recvmsg when draining clc data\n\nWhen receiving clc msg, the field length in smc_clc_msg_hdr indicates the\nlength of msg should be received from network and the value should not be\nfully trusted as it is from the network. Once the value of length exceeds\nthe value of buflen in function smc_clc_wait_msg it may run into deadloop\nwhen trying to drain the remaining data exceeding buflen.\n\nThis patch checks the return value of sock_recvmsg when draining data in\ncase of deadloop in draining."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/smc: comprobar el valor de retorno de sock_recvmsg al drenar datos de clc Al recibir un mensaje de clc, la longitud del campo en smc_clc_msg_hdr indica que la longitud del mensaje debe recibirse de la red y que el valor no debe ser completamente confiable ya que es de la red. Una vez que el valor de la longitud excede el valor de buflen en la función smc_clc_wait_msg, puede encontrarse con un bucle muerto al intentar drenar los datos restantes que exceden buflen. Este parche verifica el valor de retorno de sock_recvmsg al drenar datos en caso de un bucle muerto en el drenaje."
    }
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