Log Message:
adobe-flash-player: update to 31.0.0.108.

Upstream announcement:

https://helpx.adobe.com/security/products/flash-player/apsb18-31.html

Adobe Security Bulletin
 Security updates available for Flash Player | APSB18-31

 Summary

  Adobe has released security updates for Adobe Flash Player for Windows,
  macOS, Linux and Chrome OS. These updates address an important
  vulnerability in Adobe Flash Player 30.0.0.154 and earlier versions.
  Successful exploitation could lead to information disclosure.