GlusterFS 3.3.0, as used in Red Hat Storage server 2.0, allows local users to overwrite arbitrary files via a symlink attack on temporary files with predictable names.
https://exchange.xforce.ibmcloud.com/vulnerabilities/80074
https://bugzilla.redhat.com/show_bug.cgi?id=856341
http://www.securitytracker.com/id?1027756