CVE-2012-4461

Impact:
Moderate
Public Date:
2012-11-06
Bugzilla:
862900: CVE-2012-4461 kernel: kvm: invalid opcode oops on SET_SREGS with OSXSAVE bit set

The MITRE CVE dictionary describes this issue as:

The KVM subsystem in the Linux kernel before 3.6.9, when running on hosts that use qemu userspace without XSAVE, allows local users to cause a denial of service (kernel OOPS) by using the KVM_SET_SREGS ioctl to set the X86_CR4_OSXSAVE bit in the guest cr4 register, then calling the KVM_RUN ioctl.

Find out more about CVE-2012-4461 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 5.

This issue did affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 6.

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise MRG 2.

CVSS v2 metrics

Base Score 4.7
Base Metrics AV:L/AC:M/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux Extended Update Support 6.2 (kernel) RHSA-2013:0882 2013-05-30
Red Hat Enterprise Linux 6 (kernel) RHSA-2013:0223 2013-02-05

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Not affected
Red Hat Enterprise Linux 5 kvm Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Acknowledgements

Red Hat would like to thank Jon Howell for reporting this issue.
Last Modified

CVE description copyright © 2017, The MITRE Corporation