kernel: KVM: x86/mmu: Zap _all_ roots when unmapping gfn range in TDP MMU

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Zap all roots when unmapping gfn range in TDP MMU Zap both valid and invalid roots when zapping/unmapping a gfn range, as KVM must ensure it holds no references to the freed page after returning from the unmap...

GSD-2022-1001136 KVM: x86/mmu: Zap _all_ roots when unmapping gfn range in TDP MMU

KVM: x86/mmu: Zap all roots when unmapping gfn range in TDP MMU 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 v5.17.2 by commit...