pkexec.c in pkexec in libpolkit in PolicyKit 0.96 allows local users to determine the existence of arbitrary files via the argument.
bugs.freedesktop.org/show_bug.cgi?id=26982
cgit.freedesktop.org/PolicyKit/commit/?id=14bdfd816512a82b1ad258fa143ae5faa945df8a
secunia.com/advisories/39149
secunia.com/advisories/48817
security.gentoo.org/glsa/glsa-201204-06.xml
exchange.xforce.ibmcloud.com/vulnerabilities/57543
launchpad.net/bugs/532852
marc.info/?l=oss-security&m=127014095301235&w=2
marc.info/?l=oss-security&m=127014999113790&w=2