The SQL Server team has released CU #11 for SQL Server 2012 RTM.
NOTE: This is THE LAST CU for the RTM branch. This should still tell you two things: (1) SP2 is very likely on its way soon, and (2) if you're still on RTM, it's getting time to think about moving to SP1 (or SP2, when it arrives).
Relevant for builds 11.0.2100 -> 11.0.2423. Do not attempt to install on SQL Server 2012 SP1 (any build >= 11.0.3000) or any previous version.