Mandriva Linux Security Advisory 2011-039 - Multiple cross-site scripting, denial of service and arbitrary code execution security flaws were discovered in webkit. The updated packages have been upgraded to the latest version to correct these issues.
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Zero Day Initiative Advisory 10-154 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari's Webkit. Authentication is not required to exploit this vulnerability. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within Webkit's support of the 'first-letter' css style. If a particular container has the first-letter style applied to it, the library will create a dual reference of text associated with the style for rendering. Later upon repainting or style recalculation, the application will access the freed memory which can lead to code execution under the context of the application.
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Apple Safari WebKit suffers from a HTML button use-after-free vulnerability.
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