An issue was discovered in Adobe Flash Player 27.0.0.183 and earlier versions. This vulnerability occurs as a result of a computation that reads data that is past the end of the target buffer; the computation is part of providing language- and region- or country- specific functionality. The use of an invalid (out-of-range) pointer offset during access of internal data structure fields causes the vulnerability. A successful attack can lead to sensitive data exposure.
https://security.gentoo.org/glsa/201711-13
https://helpx.adobe.com/security/products/flash-player/apsb17-33.html
https://access.redhat.com/errata/RHSA-2017:3222