Adobe Security Bulletin APSB18-39 for Adobe Flash Player describes a flaw that can possibly lead to information disclosure when Flash Player is used to play a specially crafted SWF file: Out-of-bounds Read -- CVE-2018-15978 External References: https://helpx.adobe.com/security/products/flash-player/apsb18-39.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Supplementary Via RHSA-2018:3618 https://access.redhat.com/errata/RHSA-2018:3618