xen/gnttab: fix gnttabendforeign_access() without page specified
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.105 by commit 39c00d09286c67567cdf23ebc8e00e47722ef769. For more details please see the references link.