CVE-2026-23013

Estado: ModificadaAlta (7.8)—

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

net: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback

octep_vf_request_irqs() requests MSI-X queue IRQs with dev_id set to ioq_vector. If request_irq() fails part-way, the rollback loop calls free_irq() with dev_id set to 'oct', which does not match the original dev_id and may leave the irqaction registered.

This can keep IRQ handlers alive while ioq_vector is later freed during unwind/teardown, leading to a use-after-free or crash when an interrupt fires.

Fix the error path to free IRQs with the same ioq_vector dev_id used during request_irq().

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 6
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1059 Command and Scripting Interpreterexecution75 %

Vulnerabilidad de uso después de liberación (CWE-416) en kernel Linux con acceso local (AV:L, PR:L) que permite escalada de privilegios. El mal manejo de IRQ puede ejecutar código cuando se dispara una interrupción.

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 Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Behavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-416

Referencias

JSON original (NVD)

Mostrar

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback\n\noctep_vf_request_irqs() requests MSI-X queue IRQs with dev_id set to\nioq_vector. If request_irq() fails part-way, the rollback loop calls\nfree_irq() with dev_id set to 'oct', which does not match the original\ndev_id and may leave the irqaction registered.\n\nThis can keep IRQ handlers alive while ioq_vector is later freed during\nunwind/teardown, leading to a use-after-free or crash when an interrupt\nfires.\n\nFix the error path to free IRQs with the same ioq_vector dev_id used\nduring request_irq()."
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      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: octeon_ep_vf: corregir la falta de coincidencia de dev_id de free_irq en la reversión de IRQ\n\noctep_vf_request_irqs() solicita IRQs de cola MSI-X con dev_id establecido en ioq_vector. Si request_irq() falla a mitad de camino, el bucle de reversión llama a free_irq() con dev_id establecido en 'oct', lo que no coincide con el dev_id original y puede dejar la irqaction registrada.\n\nEsto puede mantener los manejadores de IRQ activos mientras ioq_vector es liberado posteriormente durante el desenrollado/desmontaje, lo que lleva a un uso después de liberación o un fallo cuando se dispara una interrupción.\n\nCorregir la ruta de error para liberar IRQs con el mismo dev_id de ioq_vector utilizado durante request_irq()."
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