/usr/lib/x86_64-linux-gnu/liblzma.so is in liblzma-dev 5.1.1alpha+20120614-2ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/liblzma.so.5.0.0
/lib/x86_64-linux-gnu/liblzma.so.5.0.0