A certain Fedora patch for the utrace subsystem in the Linux kernel before 2.6.26.5-28 on Fedora 8, and before 2.6.26.5-45 on Fedora 9, allows local users to cause a denial of service (NULL pointer dereference and system crash or hang) via a call to the utrace_control function.
https://exchange.xforce.ibmcloud.com/vulnerabilities/45644
https://euvd.enisa.europa.eu/vulnerability/EUVD-2008-3818
https://bugzilla.redhat.com/show_bug.cgi?id=464883
http://www.securityfocus.com/bid/31536