There is another new version of Mozilla Firefox available, and version 10.0.1 includes a fix for a critical security vulnerability in the browser. The flaw is a serious use-after-free flaw in a component of the browser that also exists in Thunderbird, SeaMonkey and other Mozilla products.

"Mozilla developers Andrew McCreight and Olli Pettay found that ReadPrototypeBindings will leave a XBL binding in a hash table even when the function fails. If this occurs, when the cycle collector reads this hash table and attempts to do a virtual method on this binding a crash will occur. This crash may be potentially exploitable," Mozilla said in its advisory.