Adobe Security Bulletin APSB18-19 for Adobe Flash Player describes a flaw that can possibly lead to arbitrary code execution when Flash Player is used to play a specially crafted SWF file: Type Confusion -- CVE-2018-4945 External References: https://helpx.adobe.com/security/products/flash-player/apsb18-19.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Supplementary Via RHSA-2018:1827 https://access.redhat.com/errata/RHSA-2018:1827