Use-after-free vulnerability in the CSharedStyleSheet::Notify function in the Cascading Style Sheets (CSS) parser in mshtml.dll, as used in Microsoft Internet Explorer 6 through 8 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a self-referential @import rule in a stylesheet, aka "CSS Memory Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12382
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-003
http://www.vupen.com/english/advisories/2011/0318
http://www.vupen.com/english/advisories/2010/3156
http://www.securitytracker.com/id?1024922
http://www.securityfocus.com/bid/45246
http://www.microsoft.com/technet/security/advisory/2488013.mspx
http://www.kb.cert.org/vuls/id/634956
http://support.avaya.com/css/P8/documents/100127294