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Case File

CVE-2009-4031

HIGH · CVSS 7.8 EPSS 3.11%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2009-11-29 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.8. It affects Linux. It may lead to a denial-of-service condition.

CVE
CVE-2009-4031
Severity
HIGH
CVSS
7.8
EPSS
3.11%
Linux

Original NVD Description

The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support.