The host_start function in drivers/usb/chipidea/host.c in the Linux kernel before 3.7.4 does not properly support a certain non-streaming option, which allows local users to cause a denial of service (system crash) by sending a large amount of network traffic through a USB/Ethernet adapter.
https://bugzilla.redhat.com/show_bug.cgi?id=959210
http://www.openwall.com/lists/oss-security/2013/05/05/2