/usr/share/syslinux/themes/debian-squeeze/syslinux-live/rosh.c32 is in syslinux-themes-debian-squeeze 12-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/syslinux/themes/debian-squeeze/syslinux-live/../../../../../lib/syslinux/rosh.c32