The MITRE CVE dictionary describes this issue as:
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.
Find out more about CVE-2014-0203 from the
MITRE CVE dictionary dictionary and
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 7 and Red Hat Enterprise MRG 2.