The virDomainListPopulate function in conf/domain_conf.c in libvirt before 1.2.9 does not clean up the lock on the list of domains, which allows remote attackers to cause a denial of service (deadlock) via a NULL value in the second parameter in the virConnectListAllDomains API command.
{
"binaries": [
{
"binary_version": "1.2.2-0ubuntu13.1.7",
"binary_name": "libvirt-bin"
},
{
"binary_version": "1.2.2-0ubuntu13.1.7",
"binary_name": "libvirt-dev"
},
{
"binary_version": "1.2.2-0ubuntu13.1.7",
"binary_name": "libvirt0"
}
],
"availability": "No subscription required"
}