fs/namei.c in Linux kernel 2.6.18 through 2.6.34 does not always follow NFS automount "symlinks," which allows attackers to have an unknown impact, related to LOOKUP_FOLLOW.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10093
https://bugzilla.redhat.com/show_bug.cgi?id=567813
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
http://www.securityfocus.com/bid/39044
http://www.securityfocus.com/archive/1/516397/100/0/threaded
http://www.openwall.com/lists/oss-security/2010/02/24/3
http://www.novell.com/linux/security/advisories/2010_23_kernel.html
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
http://www.mandriva.com/security/advisories?name=MDVSA-2010:088
http://www.debian.org/security/2010/dsa-2053
http://secunia.com/advisories/43315
http://secunia.com/advisories/39830
http://secunia.com/advisories/39742
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00007.html