/usr/lib/x86_64-linux-gnu/sasl2/libgssapiv2.so.2 is in libsasl2-modules-gssapi-heimdal 2.1.27~101-g0780600+dfsg-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/sasl2/libgssapiv2.so.2.0.25