Buffer overflow in hw/ide/ahci.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service and possibly execute arbitrary code via vectors related to migrating ports.
http://lists.nongnu.org/archive/html/qemu-stable/2014-07/msg00187.html
http://lists.gnu.org/archive/html/qemu-devel/2013-12/msg00394.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-May/133345.html
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ae2158ad6ce0845b2fae2a22aa7f19c0d7a71ce5