Adobe Flash Player versions 23.0.0.207 and earlier, 11.2.202.644 and earlier have an exploitable use after free vulnerability in the TextField class. Successful exploitation could lead to arbitrary code execution.
https://security.gentoo.org/glsa/201701-17
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-154
http://www.securityfocus.com/bid/94877
http://rhn.redhat.com/errata/RHSA-2016-2947.html
http://lists.opensuse.org/opensuse-updates/2016-12/msg00112.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00064.html