The xenDaemonListDefinedDomains function in xen/xend_internal.c in libvirt 1.1.1 allows remote authenticated users to cause a denial of service (memory corruption and crash) via vectors involving the virConnectListDefinedDomains API function.
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.