XEN was updated to fix various denial of service issues. - bnc#789945 - CVE-2012-5510: xen: Grant table version switch list corruption vulnerability - bnc#789944 - CVE-2012-5511: xen: Several HVM operations do not validate the range of their inputs - bnc#789940 - CVE-2012-5512: xen: HVMOP_get_mem_access crash / HVMOP_set_mem_access information leak - bnc#789951 - CVE-2012-5513: xen: XENMEM_exchange may overwrite hypervisor memory - bnc#789948 - CVE-2012-5514: xen: Missing unlock in guest_physmap_mark_populate_on_demand - bnc#789950 - CVE-2012-5515: xen: Several memory hypercall operations allow invalid extent order values