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CVE-2024-56708

Estado: ModificadaAlta (7.8)—

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

EDAC/igen6: Avoid segmentation fault on module unload

The segmentation fault happens because:

During modprobe: 1. In igen6_probe(), igen6_pvt will be allocated with kzalloc() 2. In igen6_register_mci(), mci->pvt_info will point to &igen6_pvt->imc[mc]

During rmmod: 1. In mci_release() in edac_mc.c, it will kfree(mci->pvt_info) 2. In igen6_remove(), it will kfree(igen6_pvt);

Fix this issue by setting mci->pvt_info to NULL to avoid the double kfree.

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.

Vulnerabilidad local (AV:L/PR:L) de double-free (CWE-415) en el kernel de Linux que permite escalada de privilegios mediante corrupción de memoria. La ejecución de código es consecuencia de la corrupción de memoria explotable localmente.

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\nEDAC/igen6: Avoid segmentation fault on module unload\n\nThe segmentation fault happens because:\n\nDuring modprobe:\n1. In igen6_probe(), igen6_pvt will be allocated with kzalloc()\n2. In igen6_register_mci(), mci->pvt_info will point to\n   &igen6_pvt->imc[mc]\n\nDuring rmmod:\n1. In mci_release() in edac_mc.c, it will kfree(mci->pvt_info)\n2. In igen6_remove(), it will kfree(igen6_pvt);\n\nFix this issue by setting mci->pvt_info to NULL to avoid the double\nkfree."
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