tl;dr if you have physical access to the CAN bus, you can cause enough errors to render it inoperable, by tampering with CAN frames and flipping bits around.
If you have physical access to the CAN bus you can also make it inoperable by shorting the two wires together... not sure the takeaway is supposed to be with this.
If you have physical access to the CAN bus you can also make it inoperable by shorting the two wires together... not sure the takeaway is supposed to be with this.