A flaw was found in the way QEMU-KVM handled the reloading of fs and gs
segment registers when they had invalid selectors. A privileged host
user with access to "/dev/kvm" could use this flaw to crash the host
(denial of service). (CVE-2010-3698)
The following procedure must be performed before this update will take
effect:
1) Stop all KVM guest virtual machines.
2) Either reboot the hypervisor machine or, as the root user, remove
(using "modprobe -r [module]") and reload (using "modprobe [module]")
all of the following modules which are currently running (determined
using "lsmod"):
kvm, ksm, kvm-intel or kvm-amd.