Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.302 on Windows and OS X, 14.x through 18.0.0.203 on Windows and OS X, 11.x through 11.2.202.481 on Linux, and 12.x through 18.0.0.204 on Linux Chrome installations allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted Flash content that overrides a valueOf function, as exploited in the wild in July 2015.
blog.trendmicro.com/trendlabs-security-intelligence/new-zero-day-vulnerability-cve-2015-5123-in-adobe-flash-emerges-from-hacking-team-leak/
lists.opensuse.org/opensuse-security-announce/2015-07/msg00028.html
lists.opensuse.org/opensuse-security-announce/2015-07/msg00029.html
lists.opensuse.org/opensuse-security-announce/2015-07/msg00032.html
marc.info/?l=bugtraq&m=144050155601375&w=2
rhn.redhat.com/errata/RHSA-2015-1235.html
www.kb.cert.org/vuls/id/918568
www.securityfocus.com/bid/75710
www.securitytracker.com/id/1032890
www.us-cert.gov/ncas/alerts/TA15-195A
h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04796784
helpx.adobe.com/security/products/flash-player/apsa15-04.html
helpx.adobe.com/security/products/flash-player/apsb15-18.html
security.gentoo.org/glsa/201508-01