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CVE-2024-26747

Estado: AnalizadaMedia (4.4)—

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: roles: soluciona el problema del puntero NULL al colocar la referencia del módulo. En el diseño actual, el controlador de clase de rol usb obtendrá la referencia del módulo principal usb_role_switch después de que el usuario obtenga el dispositivo usb_role_switch y coloque la referencia después del El usuario puso el dispositivo usb_role_switch. Sin embargo, el dispositivo principal de usb_role_switch se puede eliminar antes de que el usuario coloque usb_role_switch.

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Si es así, entonces, el problema del puntero NULL se solucionará cuando el usuario coloque la referencia del módulo principal. Esto guardará el puntero del módulo en la estructura de usb_role_switch. Entonces, no necesitamos encontrar el módulo iterando relaciones largas.

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 (2)

Debian — Debian LinuxLinux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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              "automatable": "no"
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
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          "value": "CWE-476"
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: roles: fix NULL pointer issue when put module's reference\n\nIn current design, usb role class driver will get usb_role_switch parent's\nmodule reference after the user get usb_role_switch device and put the\nreference after the user put the usb_role_switch device. However, the\nparent device of usb_role_switch may be removed before the user put the\nusb_role_switch. If so, then, NULL pointer issue will be met when the user\nput the parent module's reference.\n\nThis will save the module pointer in structure of usb_role_switch. Then,\nwe don't need to find module by iterating long relations."
    },
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    }
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  "lastModified": "2026-06-17T07:18:14.527",
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