arch/arm/kvm/arm.c in the Linux kernel before 3.10 on the ARM platform, when KVM is used, allows host OS users to cause a denial of service (NULL pointer dereference, OOPS, and host OS crash) or possibly have unspecified other impact by omitting vCPU initialization before a KVM_GET_REG_LIST ioctl call.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e8180dcaa8470ceca21109f143876fdcd9fe050a
www.openwall.com/lists/oss-security/2013/08/26/4
www.securityfocus.com/bid/61995
github.com/torvalds/linux/commit/e8180dcaa8470ceca21109f143876fdcd9fe050a
www.kernel.org/pub/linux/kernel/v3.x/patch-3.10.bz2