/usr/share/doc/linux-signed-generic-lts-saucy/changelog.gz is in linux-signed-generic-lts-saucy 3.11.0.26.23.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/linux-signed-generic-lts-saucy/../linux-signed-image-generic-lts-saucy/changelog.gz