The usb_device_post_load function in hw/usb/bus.c in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via a crafted savevm image, related to a negative setup_len or setup_index value.
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=9f8e9895c504149d7048e9fc5eb5cbb34b16e49a