Comment 23 for bug 72872

Workaround:
sudo mount /dev/cdrom /media/cdrom -o rw,uid=`id -u USERNAME`,gid=`id -g USERNAME`,loop

If necessary, add -t iso9660 (but I've found that actually -breaks- the command sometimes!).

Note: replace USERNAME with your user name (obviously); I've provided gid's equivalent for reference but you needn't include it for this workaround (if all you need is access to the files).