A systemd bugfix update has been released for CentOS 7.

CentOS-announce: CEBA-2020:3350 CentOS 7 systemd BugFix Update

CentOS Errata and Bugfix Advisory 2020:3350

Upstream details at :   https://access.redhat.com/errata/RHBA-2020:3350

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

x86_64:
c567d8148be4cbbafb0f443c59fb2faec08483cd81f6ca84f010769451162bf5 libgudev1-219-73.el7_8.9.i686.rpm
33a6b4dedff36d3e14d23f9c5d527972b7707fe0dddad579d58663bd60d50005 libgudev1-219-73.el7_8.9.x86_64.rpm
b0426ebf17b9b4f5889144f4d51f1a3fea6ec62d0facfb2630b6c07e1e7b8ac3 libgudev1-devel-219-73.el7_8.9.i686.rpm
1f21f6edf5678e5cbcec7d36af46c56df5dc80378213a76f50009b6b07080936 libgudev1-devel-219-73.el7_8.9.x86_64.rpm
e2400ded564b4fd9fba8a744b818b7a2152a78efd85aa025f543f0c5e0f03fcd systemd-219-73.el7_8.9.x86_64.rpm
de1dda0a139a4ae86e40604d17ecb33aef4a38156a3c3195942a8bbc13388666 systemd-devel-219-73.el7_8.9.i686.rpm
2a1e7cd453de4133f5700b5d596fba9afce8541aa58c4734da107a1ddc6c4e5c systemd-devel-219-73.el7_8.9.x86_64.rpm
a42801b204c3b4178b62c54619c071aafa4532d836a93adf2c556daa932b51ae systemd-journal-gateway-219-73.el7_8.9.x86_64.rpm
27c0a7ced50251de61d4cbe4fb6b1942ae72e5ad332ece9a2a666c11fdc0093c systemd-libs-219-73.el7_8.9.i686.rpm
ede8f86313c99b59cd91ef1d7bad7890e8eeffe043f61abf47012c44dc5c99c3 systemd-libs-219-73.el7_8.9.x86_64.rpm
07871f43c991e7eaca16f9eaf67151714434f77e0f892a1b424feee9442a94f2 systemd-networkd-219-73.el7_8.9.x86_64.rpm
7d97385cd5463074fd2446fd28706d355c3d2e7866b33484d39c4a49ee775f4d systemd-python-219-73.el7_8.9.x86_64.rpm
56e2c1a59a1a0d1394c8a47fa1cc4e233c7d8317a4b397c5464a70483b58aa82 systemd-resolved-219-73.el7_8.9.i686.rpm
9a180f5dc35c1b73775523bde31e65ba2263517d97afe6cd183f03bb96484dfe systemd-resolved-219-73.el7_8.9.x86_64.rpm
70bc0c186f63275107428c1b61f7d08f23d3d38c939b94c110c8186a503fd5a4 systemd-sysv-219-73.el7_8.9.x86_64.rpm

Source:
0bb3b645abfb9222b27117583c76623f5ac783168a2b2eaf8e68b7b076ca61b5 systemd-219-73.el7_8.9.src.rpm