Affected Adobe software versions include: Adobe Flash Player 12.0.0.43 and earlier versions for Windows and Macintosh, and Adobe Flash Player 11.2.202.335 and earlier versions for Linux.
From Adobe’s security bulletin, the following details describe the vulnerability resolved in these updates:
These updates resolve an integer underflow vulnerability that could be exploited to execute arbitrary code on the affected system (CVE-2014-0497).
Users of Adobe Flash Player 12.0.0.43 and earlier versions for Windows and Macintosh should update to Adobe Flash Player 12.0.0.44. Users of Adobe Flash Player 11.2.202.335 and earlier versions for Linux should update to Adobe Flash Player 11.2.202.336. Adobe Flash Player 12.0.0.41 installed with Google Chrome will automatically be updated to the latest Google Chrome version, which will include Adobe Flash Player 12.0.0.44 for Windows, Mac, and Linux.
Update: Due to security issues in older Flash Player versions, Apple has updated the web plug-in blocking mechanism to disable all versions prior to Flash Player 12.0.0.44.