The (1) qemuDomainMigratePerform and (2) qemuDomainMigrateFinish2 functions in qemu/qemu_driver.c in libvirt do not unlock the domain when an ACL check fails, which allow local users to cause a denial of service via unspecified vectors.
{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.2.2-0ubuntu13.1.16",
            "binary_name": "libvirt-bin"
        },
        {
            "binary_version": "1.2.2-0ubuntu13.1.16",
            "binary_name": "libvirt-dev"
        },
        {
            "binary_version": "1.2.2-0ubuntu13.1.16",
            "binary_name": "libvirt0"
        }
    ]
}