A corosync bugfix update has been released for CentOS 7.

CEBA-2021:0349 CentOS 7 corosync BugFix Update

CentOS Errata and Bugfix Advisory 2021:0349

Upstream details at :   https://access.redhat.com/errata/RHBA-2021:0349

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

x86_64:
69d4fb9319ca5a9e4cae9e47996216cc1f227003389290e9e68c05911af73d15 corosync-2.4.5-7.el7_9.1.x86_64.rpm
adf023be78972d5813085a5facdbea98c19687e2f35459fa6060b6c2fded31a9 corosynclib-2.4.5-7.el7_9.1.i686.rpm
99812ac04e29b031870c5675a4888ceb7ec75a205bace3fe8e9339e91f0e8109 corosynclib-2.4.5-7.el7_9.1.x86_64.rpm
26c0bf18af70ee3cb9525c40bdea17bad250aa0b3b0200dd8132b995dc4081a9 corosynclib-devel-2.4.5-7.el7_9.1.i686.rpm
d413e9756d3b6aece12ea946151d51900d80c7fc73dbaac617ca6d4212d49e38 corosynclib-devel-2.4.5-7.el7_9.1.x86_64.rpm
c5fc7f37feaeaf11068007f084d0a7046d1674006226de685b890730ee95e3c5 corosync-qdevice-2.4.5-7.el7_9.1.x86_64.rpm
2bf6c6071be41d65c91d31c9399563bd6d9298e9a9911c2cfff1bae35d4209fe corosync-qnetd-2.4.5-7.el7_9.1.x86_64.rpm
fefe08dca680fa571c295cf0d51d266aa3aa3a357dc1bdb87dd804e1fe5179fd spausedd-2.4.5-7.el7_9.1.x86_64.rpm

Source:
6d674cc0d7e239cc9f77c5885971c1ef180493add3f3592ebfe763b4798c6420 corosync-2.4.5-7.el7_9.1.src.rpm