CVE-2026-23357

Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
can: mcp251x: fix deadlock in error path of mcp251x_open
The mcp251x_open() function call free_irq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpc_lock and free_irq() will deadlock waiting for the handler to finish.
This issue is similar to the one fixed in commit 7dd9c26bd6cf ("can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open") but for the error path.
To solve this issue move the call to free_irq() after the lock is released. Setting `priv->force_quit = 1` beforehand ensure that the IRQ handler will exit right away once it acquired the lock.
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.10%
Percentil entre todas las CVEs puntuadas: 1
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).
Tecnologías afectadas (1)

Linux — Linux Kernel
CWE

CWE-667
Referencias

JSON original (NVD)

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          "value": "CWE-667"
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcp251x: fix deadlock in error path of mcp251x_open\n\nThe mcp251x_open() function call free_irq() in its error path with the\nmpc_lock mutex held. But if an interrupt already occurred the\ninterrupt handler will be waiting for the mpc_lock and free_irq() will\ndeadlock waiting for the handler to finish.\n\nThis issue is similar to the one fixed in commit 7dd9c26bd6cf (\"can:\nmcp251x: fix deadlock if an interrupt occurs during mcp251x_open\") but\nfor the error path.\n\nTo solve this issue move the call to free_irq() after the lock is\nreleased. Setting `priv->force_quit = 1` beforehand ensure that the IRQ\nhandler will exit right away once it acquired the lock."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: mcp251x: corregir interbloqueo en la ruta de error de mcp251x_open\n\nLa función mcp251x_open() llama a free_irq() en su ruta de error con el mutex mpc_lock retenido. Pero si ya ocurrió una interrupción, el gestor de interrupciones estará esperando por el mpc_lock y free_irq() se interbloqueará esperando a que el gestor termine.\n\nEste problema es similar al resuelto en el commit 7dd9c26bd6cf ('can: mcp251x: corregir interbloqueo si ocurre una interrupción durante mcp251x_open') pero para la ruta de error.\n\nPara resolver este problema, mueva la llamada a free_irq() después de que se libere el bloqueo. Establecer `priv-&gt;force_quit = 1` de antemano asegura que el gestor IRQ saldrá de inmediato una vez que haya adquirido el bloqueo."
    }
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  "lastModified": "2026-06-17T10:21:25.323",
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