A cloud-init bugfix update has been released for CentOS 7.

CEBA-2022:0626 CentOS 7 cloud-init BugFix Update

CentOS Errata and Bugfix Advisory 2022:0626

Upstream details at :   https://access.redhat.com/errata/RHBA-2022:0626

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

x86_64:
bbe893457383d81228467a2e58df9d5f1d18cbfd30d4cd35b2c717dc660133b7 cloud-init-19.4-7.el7.centos.6.x86_64.rpm

Source:
bfd230ff659493611aa076e11b11232ccb1a9b2a2684c44616adb4879a828ecb cloud-init-19.4-7.el7.centos.6.src.rpm