Adobe Flash Player versions 24.0.0.186 and earlier have an exploitable memory corruption vulnerability due to a concurrency error when manipulating a display list. Successful exploitation could lead to arbitrary code execution.
https://www.exploit-db.com/exploits/41012/
https://www.exploit-db.com/exploits/41008/
https://security.gentoo.org/glsa/201702-20
https://helpx.adobe.com/security/products/flash-player/apsb17-02.html
https://cosig.gouv.qc.ca/en/cosig-2017-01-en/
http://www.securitytracker.com/id/1037570
http://www.securityfocus.com/bid/95350
http://rhn.redhat.com/errata/RHSA-2017-0057.html
http://packetstormsecurity.com/files/140463/Adobe-Flash-24.0.0.186-Code-Execution.html