As part of their Incremental Service Modelling, Microsoft have released SQL Server 2012 Service Pack 1 Cumulative Update #4.

http://support.microsoft.com/kb/2833645

To apply this cumulative update package, you must be running SQL Server 2012 SP1. You may have to restart the computer after you apply this cumulative update package.

This CU contains 39 fixes and is pertinent for versions 11.0.3000 – 11.0.3367 but is not for SQL Server 2012 RTM (11.0.2100 – 11.0.2999)

The build number of the cumulative update package is 11.0.3368.0