The CSS parser (khtml/css/cssparser.cpp) in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and possibly read memory via a crafted font face source, related to "type confusion."
http://www.securitytracker.com/id?1027709
http://www.openwall.com/lists/oss-security/2012/10/30/6
http://www.openwall.com/lists/oss-security/2012/10/11/11
http://www.nth-dimension.org.uk/pub/NDSA20121010.txt.asc
http://secunia.com/advisories/51145
http://secunia.com/advisories/51097