On a live Linux session, inserting a keyboard or mouse via USB onto the computer causes /dev/sr0 to be remapped as /dev/sr1, which makes the live system unable to access the DVD.
sudo rename /dev/sr1 /dev/sr0 does rename the device file but running
lsblk still shows the DVD drive as sr1.
sudo mount /dev/sr1 /cdrom -o noatime` (default mounting options) do not fix the Input/Output errors from loop0, which represents the SquashFS.
Even after that, I still get an Input/Output errors and SquashFS errors, because SquashFS memorizes unreadable sectors, which causes them even to be inaccessible, despite the DVD is mounted correctly and available again.