CentOS Errata and Bugfix Advisory 2015:0976 

Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0976.html

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

x86_64:
91b395f5d8785045c4b4d11b3c18e63e64f75df5b38b1b648117139aef47b225  corosync-2.3.4-4.el7_1.1.x86_64.rpm
c91d1d782f5321d7a60f1856b226f15923269aba174f5d1014ebb95b272000f4  corosynclib-2.3.4-4.el7_1.1.i686.rpm
4fc31c92b0a0a5bd99d21abcfeffe6cb81a5e7d06196d773a86be4989ea7eea3  corosynclib-2.3.4-4.el7_1.1.x86_64.rpm
6e14693d851727d98afe558537db5c91317db0b3aa83e496858f79b622c6edc9  corosynclib-devel-2.3.4-4.el7_1.1.i686.rpm
c986a6f60c5058590a29b5465e8b0d35acacdc35ab0aab923c78bb1a25082fb8  corosynclib-devel-2.3.4-4.el7_1.1.x86_64.rpm

Source:
7e4d603467ccc0f22c9c9adfe7d18fa96f41d3d1818aa575666f77f550af2ddf  corosync-2.3.4-4.el7_1.1.src.rpm