The ActionScript parameter conversion in the fix for an issue in the December Flash bulletin APSB15-32 can sometimes access a parameter on the native stack that is uninitialized.
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Red Hat Security Advisory 2016-0438-01 - The flash-plugin package contains a Mozilla Firefox compatible Adobe Flash Player web browser plug-in. This update fixes multiple vulnerabilities in Adobe Flash Player. These vulnerabilities, detailed in the Adobe Security Bulletin APSB16-08 listed in the References section, could allow an attacker to create a specially crafted SWF file that would cause flash-plugin to crash, execute arbitrary code, or disclose sensitive information when the victim loaded a page containing the malicious SWF content.
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