WebKitGTK+ is vulnerable to use-after-free. It is possible for a remote attackers to cause a denial of service or possibly have unspecified other impact via vectors involving text editing.
code.google.com/p/chromium/issues/detail?id=51602
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/70594
www.mandriva.com/security/advisories?name=MDVSA-2011:039
www.redhat.com/support/errata/RHSA-2011-0177.html
www.securityfocus.com/bid/45720
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=48349
bugzilla.redhat.com/show_bug.cgi?id=656115
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12266