Unspecified vulnerability in HP-UX B.11.31 allows local users to cause a denial of service (system crash) via unknown vectors related to the ttrace system call.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6215
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19004
http://www.vupen.com/english/advisories/2009/2230
http://www.securitytracker.com/id?1022706
http://www.securityfocus.com/bid/36017
http://secunia.com/advisories/36261
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01832652