February 2015 CU is a full server package – meaning no other update is required to fully patch SharePoint to this level.
Prereq’s: SharePoint 2010 Service Pack 2 should be installed. This CU does not include SP2.
The KB articles links for December CU:
KB 2910904 – SharePoint Foundation 2010
KB 2899558 – SharePoint Server 2010 (includes SharePoint Foundation CU)
KB 2899557 – Project Server 2010
Full Server Package download links:
Download SharePoint Foundation 2010 February 2015 CU
Download SharePoint Server 2010 February 2015 CU
Download Project Server 2010 February 2015 CU
Note: SharePoint 2013 Configuration Wizard need to be run on all SharePoint machines after installing the binaries in all machines starting with machine hosting Central Admin.