bdf/bdflib.c in FreeType before 2.4.2 allows remote attackers to cause a denial of service (application crash) via a crafted BDF font file, related to an attempted modification of a value in a static string.
https://bugs.launchpad.net/ubuntu/maverick/+source/freetype/+bug/617019
http://www.vupen.com/english/advisories/2010/3046
http://www.vupen.com/english/advisories/2010/3045
http://support.apple.com/kb/HT4457
http://support.apple.com/kb/HT4456
http://support.apple.com/kb/HT4435
http://secunia.com/advisories/48951
http://secunia.com/advisories/42317
http://secunia.com/advisories/42314
http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html
http://lists.apple.com/archives/security-announce/2010//Nov/msg00003.html
http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html