Apple Mac OS X 10.5 before 10.5.8 does not properly share file descriptors over local sockets, which allows local users to cause a denial of service (system crash) by placing file descriptors in messages sent to a socket that has no receiver, related to a “synchronization issue.”
lists.apple.com/archives/security-announce/2009/Aug/msg00001.html
osvdb.org/56836
secunia.com/advisories/36096
support.apple.com/kb/HT3757
www.securityfocus.com/bid/35954
www.securitytracker.com/id?1022672
www.us-cert.gov/cas/techalerts/TA09-218A.html
www.vupen.com/english/advisories/2009/2172
exchange.xforce.ibmcloud.com/vulnerabilities/52439