webkitgtk is vulnerable to arbitrary code execution. The vulnerability exists as multiple use-after-free flaws were found in WebKit. Malicious web content could cause an application using WebKitGTK+ to crash or, potentially, execute arbitrary code with the privileges of the user running the application.
code.google.com/p/chromium/issues/detail?id=60238
googlechromereleases.blogspot.com/2010/11/stable-channel-update.html
lists.fedoraproject.org/pipermail/package-announce/2011-January/052906.html
secunia.com/advisories/42109
secunia.com/advisories/43086
trac.webkit.org/changeset/70517
www.mandriva.com/security/advisories?name=MDVSA-2011:039
www.redhat.com/support/errata/RHSA-2011-0177.html
www.securityfocus.com/bid/45718
www.vupen.com/english/advisories/2011/0216
www.vupen.com/english/advisories/2011/0552
access.redhat.com/errata/RHSA-2011:0177
access.redhat.com/security/updates/classification/#moderate
bugs.webkit.org/show_bug.cgi?id=48281
bugzilla.redhat.com/show_bug.cgi?id=656126
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12174