The K7Sentry.sys kernel mode driver (aka K7AV Sentry Device Driver) before 12.8.0.119, as used in multiple K7 Computing products, allows local users to cause a denial of service (NULL pointer dereference) as demonstrated by a filename containing "crashme$$".
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-8445
http://www.securityfocus.com/bid/71615