openCryptoki before 2.4.1, when using spinlocks, allows local users to create or set world-writable permissions on arbitrary files via a symlink attack on the (1) .pkapi_xpk or (2) .pkcs11spinloc file in /tmp.
opencryptoki.git.sourceforge.net/git/gitweb.cgi?p=opencryptoki/opencryptoki%3Ba=commitdiff%3Bh=58345488c9351d9be9a4be27c8b407c2706a33a9
opencryptoki.git.sourceforge.net/git/gitweb.cgi?p=opencryptoki/opencryptoki%3Ba=commitdiff%3Bh=b7fcb3eb0319183348f1f4fb90ede4edd6487c30
secunia.com/advisories/50702
sourceforge.net/mailarchive/message.php?msg_id=28878345
www.openwall.com/lists/oss-security/2012/09/07/2
www.openwall.com/lists/oss-security/2012/09/07/6
www.openwall.com/lists/oss-security/2012/09/09/2
www.openwall.com/lists/oss-security/2012/09/20/6
www.openwall.com/lists/oss-security/2012/09/25/5
www.openwall.com/lists/oss-security/2012/09/27/2
www.securityfocus.com/bid/55627
bugzilla.redhat.com/show_bug.cgi?id=730636
exchange.xforce.ibmcloud.com/vulnerabilities/78797