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CVE-2024-50274

Estado: ModificadaAlta (7.8)—

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

idpf: avoid vport access in idpf_get_link_ksettings

When the device control plane is removed or the platform running device control plane is rebooted, a reset is detected on the driver. On driver reset, it releases the resources and waits for the reset to complete. If the reset fails, it takes the error path and releases the vport lock. At this time if the monitoring tools tries to access link settings, it call traces for accessing released vport pointer.

To avoid it, move link_speed_mbps to netdev_priv structure which removes the dependency on vport pointer and the vport lock in idpf_get_link_ksettings.

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Also use netif_carrier_ok() to check the link status and adjust the offsetof to use link_up instead of link_speed_mbps.

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) sin interacción de usuario en kernel Linux. Fallo en manejo de memoria liberada (CWE-416, use-after-free) tras reset, permite ejecución de código o DoS con privilegios elevados.

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\nidpf: avoid vport access in idpf_get_link_ksettings\n\nWhen the device control plane is removed or the platform\nrunning device control plane is rebooted, a reset is detected\non the driver. On driver reset, it releases the resources and\nwaits for the reset to complete. If the reset fails, it takes\nthe error path and releases the vport lock. At this time if the\nmonitoring tools tries to access link settings, it call traces\nfor accessing released vport pointer.\n\nTo avoid it, move link_speed_mbps to netdev_priv structure\nwhich removes the dependency on vport pointer and the vport lock\nin idpf_get_link_ksettings. Also use netif_carrier_ok()\nto check the link status and adjust the offsetof to use link_up\ninstead of link_speed_mbps."
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  "lastModified": "2026-06-17T08:04:04.573",
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