A corosync bugfix update has been released for CentOS 7.

CEBA-2021:4787 CentOS 7 corosync BugFix Update

CentOS Errata and Bugfix Advisory 2021:4787

Upstream details at :   https://access.redhat.com/errata/RHBA-2021:4787

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

x86_64:
5f7f4b24a0e71345d5407d27b3ec2dba93f549f3873d99c73c1a6b6d5527120b corosync-2.4.5-7.el7_9.2.x86_64.rpm
e5654c00b989b0595c553eaf073114c219aec1d06fb9571ebdcebbdfef5a90d5 corosynclib-2.4.5-7.el7_9.2.i686.rpm
547e7d5fe595fcb6ed9634585475a0cdf56327add42e4ccd74358d8c4a27b140 corosynclib-2.4.5-7.el7_9.2.x86_64.rpm
68ee3d48388315e955a81bc549710f8201b486ea8413b2e63a516ea8d40e5534 corosynclib-devel-2.4.5-7.el7_9.2.i686.rpm
8a874d1a0c3f0dce30ef48f0095dafcb59e864b2b89528a61ee1b1d0a5dcfb7f corosynclib-devel-2.4.5-7.el7_9.2.x86_64.rpm
298ea0c2efac5573e322e25503e2c30d52bb589fa8ef1cc0df2ba4f2bbbfd3c3 corosync-qdevice-2.4.5-7.el7_9.2.x86_64.rpm
c6c5c2f11ff4c5bdd22deb3a88852ae012482664acb196d328e4b290495979ed corosync-qnetd-2.4.5-7.el7_9.2.x86_64.rpm
9980a8413abfc3a1135efb5094b967176ab339e1f12d5eca6b6bab8d981b0391 spausedd-2.4.5-7.el7_9.2.x86_64.rpm

Source:
5a0687a0e4db6be5f25e4e7e097677547d16fcae2990cec0544ceac5897b1a64 corosync-2.4.5-7.el7_9.2.src.rpm