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CVE-2024-47695

Estado: ModificadaAlta (7.8)—

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

RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds

In the function init_conns(), after the create_con() and create_cm() for loop if something fails. In the cleanup for loop after the destroy tag, we access out of bound memory because cid is set to clt_path->s.con_num.

This commits resets the cid to clt_path->s.con_num - 1, to stay in bounds in the cleanup loop later.

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.

CWE-787 (buffer overflow) en kernel local (AV:L, PR:L) permite escalada de privilegios. Acceso local sin interacción del usuario dicta T1068. El overflow podría permitir ejecución de código privilegiado (T1059).

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

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationBehavior Prevention on Endpoint

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\nRDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds\n\nIn the function init_conns(), after the create_con() and create_cm() for\nloop if something fails. In the cleanup for loop after the destroy tag, we\naccess out of bound memory because cid is set to clt_path->s.con_num.\n\nThis commits resets the cid to clt_path->s.con_num - 1, to stay in bounds\nin the cleanup loop later."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/rtrs-clt: Restablecer cid a con_num - 1 para permanecer dentro de los límites En la función init_conns(), después del bucle for create_con() y create_cm() si algo falla. En el bucle for de limpieza después de la etiqueta destroy, accedemos a memoria fuera de los límites porque cid está configurado en clt_path->s.con_num. Esta confirmación restablece el cid a clt_path->s.con_num - 1, para permanecer dentro de los límites en el bucle de limpieza más tarde."
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