GSD-2022-1000917 xen/gnttab: fix gnttab_end_foreign_access() without page specified

xen/gnttab: fix gnttabendforeignaccess 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 v4.14.271 by commit...