CentOS Errata and Bugfix Advisory 2016:1400 

Upstream details at : https://rhn.redhat.com/errata/RHBA-2016-1400.html

The following updated files have been uploaded and are currently 
syncing to the mirrors: ( sha256sum Filename ) 

i386:
af346f6cabbfdf94737f2594b49e2ebd96dd79714bec9b1ebadec30822f02c70  mdadm-3.3.4-1.el6_8.5.i686.rpm

x86_64:
cd1543eaa8b7e7592f6e14cc078e7b9634326efacafe38985132fe6d64239c78  mdadm-3.3.4-1.el6_8.5.x86_64.rpm

Source:
2d71f4664c46a4db5d770ff8cb269b53cb23bfdca831033678bc03b89143b2f5  mdadm-3.3.4-1.el6_8.5.src.rpm