CVE-2013-6376 on Ubuntu 12.04 LTS (precise) - medium.
Description:
The recalculate_apic_map function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (host OS crash) via a crafted ICR write operation in x2apic mode. Lars Bull discovered a flaw in the recalculate_apic_map function of the Kernel Virtual Machine (KVM) subsystem in the Linux kernel. A guest OS user could exploit this flaw to cause a denial of service (host OS crash).