Integer overflow in sys_epoll_wait in eventpoll.c for Linux kernel 2.6 to 2.6.11 allows local users to overwrite kernel memory via a large number of events.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9870
http://www.redhat.com/support/errata/RHSA-2005-366.html
http://www.redhat.com/support/errata/RHSA-2005-293.html
http://www.novell.com/linux/security/advisories/2005_18_kernel.html
http://lists.grok.org.uk/pipermail/full-disclosure/2005-March/032314.html