sutil/ncpumount.c in ncpumount in ncpfs 2.2.6 produces certain detailed error messages about the results of privileged file-access attempts, which allows local users to determine the existence of arbitrary files via the mountpoint name.
http://www.securityfocus.com/bid/38563
http://www.securityfocus.com/archive/1/509894/100/0/threaded
http://www.securityfocus.com/archive/1/509893/100/0/threaded
http://seclists.org/fulldisclosure/2010/Mar/122
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html