Integer overflow in the systrace_preprepl function (STRIOCREPLACE) in systrace in OpenBSD 3.9 and NetBSD 3 allows local users to cause a denial of service (crash), gain privileges, or read arbitrary kernel memory via large numeric arguments to the systrace ioctl.
https://exchange.xforce.ibmcloud.com/vulnerabilities/29392
http://www.securityfocus.com/bid/20392
http://securitytracker.com/id?1017009