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CVE-2024-56561

Estado: ModificadaAlta (7.8)—

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

PCI: endpoint: Fix PCI domain ID release in pci_epc_destroy()

pci_epc_destroy() invokes pci_bus_release_domain_nr() to release the PCI domain ID, but there are two issues:

Fix these issues by passing 'epc->dev.parent' to pci_bus_release_domain_nr() and also do it before device_unregister().

[mani: reworded subject and description]

Detalles técnicos trazas, registros y código del informe original
  - 'epc->dev' is passed to pci_bus_release_domain_nr() which was already
    freed by device_unregister(), leading to a use-after-free issue.

  - Domain ID corresponds to the EPC device parent, so passing 'epc->dev'
    is also wrong.

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.

CVE-2024-56561 es una vulnerabilidad use-after-free (CWE-416) en el kernel de Linux con acceso local y sin interacción del usuario (AV:L, UI:N, PR:L). Permite escalada de privilegios a través de explotación de memoria. La ejecución de código es el impacto derivado de la corrupción de memoria en el k

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)

Mostrar
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: Fix PCI domain ID release in pci_epc_destroy()\n\npci_epc_destroy() invokes pci_bus_release_domain_nr() to release the PCI\ndomain ID, but there are two issues:\n\n  - 'epc->dev' is passed to pci_bus_release_domain_nr() which was already\n    freed by device_unregister(), leading to a use-after-free issue.\n\n  - Domain ID corresponds to the EPC device parent, so passing 'epc->dev'\n    is also wrong.\n\nFix these issues by passing 'epc->dev.parent' to\npci_bus_release_domain_nr() and also do it before device_unregister().\n\n[mani: reworded subject and description]"
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