CVE-2012-4461

Description

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.

References

https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html

https://bugzilla.redhat.com/show_bug.cgi?id=862900

http://www.securityfocus.com/bid/56414

http://www.openwall.com/lists/oss-security/2012/11/06/14

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.6.9

http://secunia.com/advisories/51160

http://rhn.redhat.com/errata/RHSA-2013-0882.html

http://rhn.redhat.com/errata/RHSA-2013-0223.html

http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git%3Ba=commit%3Bh=6d1068b3a98519247d8ba4ec85cd40ac136dbdf9

http://article.gmane.org/gmane.comp.emulators.kvm.devel/100742

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3