The khtml::RenderTableSection::ensureRows function in KHTMLParser in Apple Mac OS X 10.4.3 and earlier, as used by Safari and TextEdit, allows remote attackers to cause a denial of service (memory consumption and application crash) via HTML files with a large ROWSPAN attribute in a TD tag.
https://exchange.xforce.ibmcloud.com/vulnerabilities/23819
http://www.vupen.com/english/advisories/2006/0791
http://www.vupen.com/english/advisories/2005/3058
http://www.us-cert.gov/cas/techalerts/TA06-062A.html
http://www.securityfocus.com/bid/16907
http://www.kb.cert.org/vuls/id/351217
http://secunia.com/advisories/19064
http://secunia.com/advisories/18220
http://lists.apple.com/archives/security-announce/2006/Mar/msg00000.html