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CVE-2024-56775

Estado: ModificadaAlta (7.8)—

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

drm/amd/display: Fix handling of plane refcount

[Why] The mechanism to backup and restore plane states doesn't maintain refcount, which can cause issues if the refcount of the plane changes in between backup and restore operations, such as memory leaks if the refcount was supposed to go down, or double frees / invalid memory accesses if the refcount was supposed to go up.

[How] Cache and re-apply current refcount when restoring plane states.

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 de refcount en kernel Linux (AV:L, PR:L, UI:N) permite escalada de privilegios; gestión defectuosa de referencias causa DoS (memory leak/double free) o ejecución arbitraria.

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 InstallationFilter Network Traffic

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\ndrm/amd/display: Fix handling of plane refcount\n\n[Why]\nThe mechanism to backup and restore plane states doesn't maintain\nrefcount, which can cause issues if the refcount of the plane changes\nin between backup and restore operations, such as memory leaks if the\nrefcount was supposed to go down, or double frees / invalid memory\naccesses if the refcount was supposed to go up.\n\n[How]\nCache and re-apply current refcount when restoring plane states."
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    }
  ],
  "lastModified": "2026-06-17T08:12:57.820",
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