Integer overflow in Linux kernel 2.6 allows local users to overwrite kernel memory by writing to a sysfs file.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10867
http://www.securityfocus.com/archive/1/427980/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2005-366.html
http://www.novell.com/linux/security/advisories/2005_18_kernel.html