Full fix applied in Fedora: https://src.fedoraproject.org/rpms/vsftpd/c/a9d52cf4e1df09e9f229994b1e3d8ea90b5c7786?branch=master
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:1699