The (1) ncpmount, (2) ncpumount, and (3) ncplogin programs in ncpfs 2.2.6 do not properly create lock files, which allows local users to cause a denial of service (application failure) via unspecified vectors that trigger the creation of a /etc/mtab~ file that persists after the program exits.
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