/usr/lib/libvtkVolumeRenderingTCL.so is in tcl-vtk 5.8.0-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libvtkVolumeRenderingTCL.so.5.8
/usr/lib/libvtkVolumeRenderingTCL.so.5.8