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.
git.savannah.gnu.org/cgit/qemu.git/commit/?id=babd03fde68093482528010a5435c14ce9128e3f
marc.info/?l=oss-security&m=126510479211473&w=2
marc.info/?l=oss-security&m=126527304127254&w=2
wiki.qemu.org/ChangeLog
www.mail-archive.com/kvm%40vger.kernel.org/msg18447.html
www.mail-archive.com/kvm%40vger.kernel.org/msg19581.html
www.mail-archive.com/kvm%40vger.kernel.org/msg19596.html
www.securityfocus.com/bid/38158
bugzilla.redhat.com/show_bug.cgi?id=557025
exchange.xforce.ibmcloud.com/vulnerabilities/56194
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11786
rhn.redhat.com/errata/RHSA-2010-0088.html