/usr/share/man/man3/XvShmCreateImage.3.gz is in libxv-dev 2:1.0.11-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/XvCreateImage.3.gz
/usr/share/man/man3/XvCreateImage.3.gz