Percona 5.6 patches

Hi There, I am new to MYSQL and Percona. Recently we are being asked to patch a 3 node Percona(MYSQL) XtraDB cluster for one of our customers. Our Unix guys have applied their security hot fixes and have excluded Percona patches from their run. Can someone tell me how to install patches for Percona and where can I find the updates for the latest version 5.6? Any help around this would be much appreciated.

Waiting to hear back. Thanks.