CVE-2019-3887

Estado: ModificadaMedia (5.6)—

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Puntuación base: 5.6

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.36%
Percentil entre todas las CVEs puntuadas: 27
Fecha de la puntuación: 6/10/2026

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 (11)

Canonical — Ubuntu Linux Fedoraproject — Fedora Linux — Linux Kernel Redhat — Enterprise Linux Redhat — Enterprise Linux EUS Redhat — Enterprise Linux FOR Real Time Redhat — Enterprise Linux FOR Real Time FOR NFV Redhat — Enterprise Linux FOR Real Time FOR NFV TUS Redhat — Enterprise Linux FOR Real Time TUS Redhat — Enterprise Linux Server AUS Redhat — Enterprise Linux Server TUS

CWE

CWE-863
CWE-863

Referencias

JSON original (NVD)

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