/usr/lib/x86_64-linux-gnu/libcwnn.so.0 is in libcwnn0 1.1.1~a021+cvs20130302-7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libcwnn.so.0.0.0
/usr/lib/x86_64-linux-gnu/libcwnn.so.0.0.0