Log Message:
adobe-flash-player: update to 31.0.0.153.

Upstream announcemnet:

https://helpx.adobe.com/security/products/flash-player/apsb18-44.html

Adobe Security Bulletin
 Security updates available for Flash Player | APSB18-44

  Summary

  Adobe has released security updates for Adobe Flash Player for Windows,
  macOS, Linux and Chrome OS. These updates address a critical vulnerability
  in Adobe Flash Player 31.0.0.148 and earlier versions.  Successful
  exploitation could lead to arbitrary code execution in the context of
  the current user.

  Technical details about this vulnerability are publicly available.