Buffer overflow in the SCSI implementation in QEMU, as used in Xen, when a SCSI controller has more than 256 attached devices, allows local users to gain privileges via a small transfer buffer in a REPORT LUNS command.
http://www.ubuntu.com/usn/USN-2092-1
http://www.securityfocus.com/bid/62773
http://www.openwall.com/lists/oss-security/2013/10/02/2
http://rhn.redhat.com/errata/RHSA-2013-1754.html
http://rhn.redhat.com/errata/RHSA-2013-1553.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html