Adobe Security Bulletin APSB18-25 for Adobe Flash Player describes a flaw that can possibly lead to privilege escalation when Flash Player is used to play a specially crafted SWF file: Use of a component with a known vulnerability -- CVE-2018-12828 External References: https://helpx.adobe.com/security/products/flash-player/apsb18-25.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Supplementary Via RHSA-2018:2435 https://access.redhat.com/errata/RHSA-2018:2435