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MEDIUM

kernel: x86 guest OS can crash the system by writing to the EFER

Published Apr 6, 2009

Description

The vmx_set_msr function in arch/x86/kvm/vmx.c in the VMX implementation in the KVM subsystem in the Linux kernel before 2.6.29.1 on the i386 platform allows guest OS users to cause a denial of service (OOPS) by setting the EFER_LME (aka "Long mode enable") bit in the Extended Feature Enable Register (EFER) model-specific register, which is specific to the x86_64 platform.

Affected products

Remediation

Red Hat statement

Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5 or Red Hat Enterprise MRG.

References (31)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 6, 2009
Updated Aug 7, 2024
Reserved Apr 6, 2009
NVD
Status Modified
Modified Jun 16, 2026
Red Hat
Severity Moderate
Public date Mar 25, 2009
ENISA EUVD
Assigner mitre
Published Apr 6, 2009
Updated Aug 7, 2024
Exploited since n/a
EUVD-2009-1241