Use-after-free vulnerability in the ByteArray class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.296 and 14.x through 18.0.0.194 on Windows and OS X and 11.x through 11.2.202.468 on Linux 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.
https://security.gentoo.org/glsa/201507-13
http://www.us-cert.gov/ncas/alerts/TA15-195A
http://www.kb.cert.org/vuls/id/561288
http://rhn.redhat.com/errata/RHSA-2015-1214.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00016.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00015.html