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CVE-2018-10901

Estado: ModificadaAlta (7.8)—

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.

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).

Tecnologías afectadas (5)

Linux — Linux KernelRedhat — Enterprise Linux DesktopRedhat — Enterprise Linux ServerRedhat — Enterprise Linux Server AUSRedhat — Enterprise Linux Workstation

CWE

Referencias

JSON original (NVD)

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    },
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      "value": "Se encontró un fallo en el subsistema de virtualización KVM del kernel de Linux. El código VMX no restaura el límite GDT.LIMIT al valor del host anterior, sino que lo fija en 64 KB. Con un límite de GDT corrupto, el código de espacio de usuario de un host tiene la capacidad de colocar entradas maliciosas en el GDT, especialmente en las variables por CPU. Un atacante puede usar esto para aumentar sus privilegios."
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  "lastModified": "2026-06-17T01:34:52.687",
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