The virtio_load function in virtio/virtio.c in QEMU 1.x before 1.7.2 allows remote attackers to execute arbitrary code via a crafted savevm image, which triggers an out-of-bounds write.
http://rhn.redhat.com/errata/RHSA-2014-0744.html
http://rhn.redhat.com/errata/RHSA-2014-0743.html
http://lists.nongnu.org/archive/html/qemu-stable/2014-07/msg00187.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-May/133345.html
http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=cc45995294b92d95319b4782750a3580cabdbc0c