Neither man nor info page provide more information on this than:mount --no-canonicalize Don't canonicalize paths. The mount  command  canonicalizes  all paths  (from  command  line  or  fstab) and stores canonicalized paths to the /etc/mtab file. This option can  be  used  together with the -f flag for already canonicalized absolut paths.In connection with fuse, I found that it was introduced to Linux Kernel 2.8.5 to prevent … local users to bypass intended access restrictions and unmount arbitrary directories via a symlink attack [→ source].Question: What is mount --no-canonicalize actually used for? Was this just a security issue or what else is this option used for?As I'm quite limited in my settings here, I was just able to mount USB Flash Drives with and without this option, with the exact same output in /etc/mtab and when using mount --show-labelsin the minutest detail. This might be different with other file systems.Update 1: umount also provides this option, where both man and info page tells one --no-canonicalize Don't canonicalize paths. For more details about this option see the mount(8) man page
mount --no-canonicalize?
linux;security;mount;options;fuse