Adobe Security Bulletin APSB18-01 for Adobe Flash Player describes an out-of-bounds read flaw that can possibly lead to information disclosure when Flash Player is used to play a specially crafted SWF file. Quoting from the APSB18-01: Out-of-bounds Read Information Disclosure Important CVE-2018-4871 External References: https://helpx.adobe.com/security/products/flash-player/apsb18-01.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Supplementary Via RHSA-2018:0081 https://access.redhat.com/errata/RHSA-2018:0081