Avahi before 0.6.10 allows local users to cause a denial of service (mDNS/DNS-SD service disconnect) via unspecified mDNS name conflicts.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26330
http://www.securityfocus.com/bid/17884
http://www.novell.com/linux/security/advisories/2006_05_19.html
http://secunia.com/advisories/20215
http://secunia.com/advisories/20022
http://0pointer.de/cgi-bin/viewcvs.cgi/%2Acheckout%2A/trunk/docs/NEWS?root=avahi