Security researcher Looben Yang reported a buffer overflow in Gamepad API when it is exercised with a gamepad device with non-contiguous axes. This can be either an actual physical device or by the installation of a virtual gamepad. This results in a potentially exploitable crash. The Gamepad API was introduced in Firefox 29 and this issue does not affect earlier versions. 

External Reference:

http://www.mozilla.org/security/announce/2014/mfsa2014-54.html

Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Looben Yang as the original reporter.

Statement:

This issue does not affect the version of firefox as shipped with Red Hat Enterprise Linux 5 and 6