A certain Red Hat modification to the ChrootDirectory feature in OpenSSH 4.8, as used in sshd in OpenSSH 4.3 in Red Hat Enterprise Linux (RHEL) 5.4 and Fedora 11, allows local users to gain privileges via hard links to setuid programs that use configuration files within the chroot directory, related to requirements for directory ownership.
https://rhn.redhat.com/errata/RHSA-2009-1470.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9862
https://bugzilla.redhat.com/show_bug.cgi?id=522141
http://www.vupen.com/english/advisories/2010/0528
http://www.securityfocus.com/bid/36552
http://secunia.com/advisories/39182
http://secunia.com/advisories/38834
http://secunia.com/advisories/38794
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-March/038214.html