epan/dissectors/packet-usb.c in the USB dissector in Wireshark 1.6.x before 1.6.12 and 1.8.x before 1.8.4 relies on a length field to calculate an offset value, which allows remote attackers to cause a denial of service (infinite loop) via a zero value for this field.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15915
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7787
http://www.wireshark.org/security/wnpa-sec-2012-31.html
http://lists.opensuse.org/opensuse-updates/2013-01/msg00042.html
http://lists.opensuse.org/opensuse-updates/2012-12/msg00022.html
http://anonsvn.wireshark.org/viewvc?view=revision&revision=45310