Buffer overflow in the usb_host_handle_control function in the USB passthrough handling implementation in usb-linux.c in QEMU before 0.11.1 allows guest OS users to cause a denial of service (guest OS crash or hang) or possibly execute arbitrary code on the host OS via a crafted USB packet.
http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=babd03fde68093482528010a5435c14ce9128e3f
http://marc.info/?l=oss-security&m=126510479211473&w=2
http://marc.info/?l=oss-security&m=126527304127254&w=2
http://wiki.qemu.org/ChangeLog
http://www.mail-archive.com/[email protected]/msg18447.html
http://www.mail-archive.com/[email protected]/msg19581.html
http://www.mail-archive.com/[email protected]/msg19596.html
http://www.securityfocus.com/bid/38158
https://bugzilla.redhat.com/show_bug.cgi?id=557025
https://exchange.xforce.ibmcloud.com/vulnerabilities/56194
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11786