cupsd in CUPS 1.3.9 and earlier allows local users, and possibly remote attackers, to cause a denial of service (daemon crash) by adding a large number of RSS Subscriptions, which triggers a NULL pointer dereference. NOTE: this issue can be triggered remotely by leveraging CVE-2008-5184.
https://www.exploit-db.com/exploits/7150
https://exchange.xforce.ibmcloud.com/vulnerabilities/46684
https://bugs.launchpad.net/ubuntu/+source/cups/+bug/298241
http://www.openwall.com/lists/oss-security/2008/11/20/1
http://www.openwall.com/lists/oss-security/2008/11/19/4
http://www.openwall.com/lists/oss-security/2008/11/19/3
http://www.debian.org/security/2011/dsa-2176
http://support.apple.com/kb/HT3438
http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00002.html
http://lists.apple.com/archives/security-announce/2009/Feb/msg00000.html