Race condition in arch/x86/kvm/x86.c in the Linux kernel before 2.6.38 allows L2 guest OS users to cause a denial of service (L1 guest OS crash) via a crafted instruction that triggers an L2 emulation failure report, a similar issue to CVE-2014-7842.
https://github.com/torvalds/linux/commit/fc3a9157d3148ab91039c75423da8ef97be3e105
https://bugzilla.redhat.com/show_bug.cgi?id=1163762
http://www.securityfocus.com/bid/71363
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.openwall.com/lists/oss-security/2014/11/13/7
http://rhn.redhat.com/errata/RHSA-2016-0855.html
http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.38
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html