/usr/lib/x86_64-linux-gnu/libva-glx.so is in libva-dev 1.0.15-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libva-glx.so.1.3200.0
/usr/lib/x86_64-linux-gnu/libva-glx.so.1.3200.0