Mandriva Linux Security Advisory 2013-243 – A race condition was found in the way the PolicyKit pkcheck utility checked process authorization when the process was specified by its process ID via the –process option. A local user could use this flaw to bypass intended PolicyKit authorizations and escalate their privileges…. Mandriva Linux Security Advisory 2013-243 – A race condition was found in the way the PolicyKit pkcheck utility checked process authorization when the process was specified by its process ID via the –process option. A local user could use this flaw to bypass intended PolicyKit authorizations and escalate their privileges.

Read more http://packetstormsecurity.com/files/123424/MDVSA-2013-243.txt