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CVE-2024-58072

Estado: ModificadaAlta (7.8)—

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

wifi: rtlwifi: remove unused check_buddy_priv

Commit 2461c7d60f9f ("rtlwifi: Update header file") introduced a global list of private data structures.

Later on, commit 26634c4b1868 ("rtlwifi Modify existing bits to match vendor version 2013.02.07") started adding the private data to that list at probe time and added a hook, check_buddy_priv to find the private data from a similar device.

However, that function was never used.

Besides, though there is a lock for that list, it is never used. And when the probe fails, the private data is never removed from the list. This would cause a second probe to access freed memory.

Leer descripción completaMostrar menos

Remove the unused hook, structures and members, which will prevent the potential race condition on the list and its corruption during a second probe when probe fails.

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.

Acceso local (AV:L, PR:L) sin interacción permite explotar use-after-free (CWE-416) en el kernel para obtener ejecución de código con privilegios elevados tras fallar el probe.

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\nwifi: rtlwifi: remove unused check_buddy_priv\n\nCommit 2461c7d60f9f (\"rtlwifi: Update header file\") introduced a global\nlist of private data structures.\n\nLater on, commit 26634c4b1868 (\"rtlwifi Modify existing bits to match\nvendor version 2013.02.07\") started adding the private data to that list at\nprobe time and added a hook, check_buddy_priv to find the private data from\na similar device.\n\nHowever, that function was never used.\n\nBesides, though there is a lock for that list, it is never used. And when\nthe probe fails, the private data is never removed from the list. This\nwould cause a second probe to access freed memory.\n\nRemove the unused hook, structures and members, which will prevent the\npotential race condition on the list and its corruption during a second\nprobe when probe fails."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: rtlwifi: eliminar check_buddy_priv no utilizado el commit 2461c7d60f9f (\"rtlwifi: Actualizar archivo de encabezado\") introdujo una lista global de estructuras de datos privados. Más tarde, el commit 26634c4b1868 (\"rtlwifi Modificar bits existentes para que coincidan con la versión del proveedor 2013.02.07\") comenzó a agregar los datos privados a esa lista en el momento del sondeo y agregó un gancho, check_buddy_priv para encontrar los datos privados de un dispositivo similar. Sin embargo, esa función nunca se usó. Además, aunque hay un bloqueo para esa lista, nunca se usa. Y cuando el sondeo falla, los datos privados nunca se eliminan de la lista. Esto haría que un segundo sondeo acceda a la memoria liberada. Elimine el gancho, las estructuras y los miembros no utilizados, lo que evitará la posible condición de ejecución en la lista y su corrupción durante un segundo sondeo cuando el sondeo falla."
    }
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