The qemuMigrationWaitForSpice function in qemu/qemu_migration.c in libvirt before 1.1.3 does not properly enter a monitor when performing seamless SPICE migration, which allows local users to cause a denial of service (NULL pointer dereference and libvirtd crash) by causing domblkstat to be called at the same time as the qemuMonitorGetSpiceMigrationStatus function.Per: http://cwe.mitre.org/data/definitions/476.html CWE-476: NULL Pointer Dereference http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-7336
