xen/gntdev: Prevent leaking grants
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 v4.19.264 by commit cb1ccfe7655380f77a58b340072f5f40bc285902, it was introduced in version v4.19.251 by commit 73e9e72247b98da65bc32d41a961e820cca5f503. For more details please see the references link.