HP-UX B.11.00, B.11.04, B.11.11, and B.11.23 allows remote attackers to cause a denial of service via a "Rose Attack" that involves sending a subset of small IP fragments that do not form a complete, larger packet.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5760
http://www.vupen.com/english/advisories/2005/2945
http://www.securityfocus.com/bid/11258
http://www.securityfocus.com/archive/1/419594/100/0/threaded
http://www.securityfocus.com/archive/1/376490
http://support.avaya.com/elmodocs2/security/ASA-2006-062.htm
http://securitytracker.com/id?1015361