The __do_follow_link function in fs/namei.c in the Linux kernel before 2.6.33 does not properly handle the last pathname component during use of certain filesystems, which allows local users to cause a denial of service (incorrect free operations and system crash) via an open system call.
https://github.com/torvalds/linux/commit/86acdca1b63e6890540fa19495cfc708beff3d8b
http://www.securityfocus.com/bid/68125
http://linux.oracle.com/errata/ELSA-2014-3043.html