There is a use-after-free in the Adobe Flash Stage.align property setter. When the setter is called, the parameter is converted to a string early, as a part of the new use-after-free prevention changes. This conversion can invoke script, which if the this object is a MovieClip, can delete the object, deleting the thread the call is made from, which can lead to a use-after-free.
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Gentoo Linux Security Advisory 201607-3 - Multiple vulnerabilities have been found in Adobe Flash Player, the worst of which allows remote attackers to execute arbitrary code. Versions less than 11.2.202.632 are affected.
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