protected virtualization

Protected virtualization is a security feature that isolates virtual machines from the host and other VMs, often using hardware-backed memory encryption and access controls. On WindowsForum, discussions about protected virtualization focus on Linux kernel vulnerabilities like CVE-2026-46147, which affects ARM64 KVM protected virtualization paths. This bug involves pinned memory leaks and race conditions during vCPU initialization, relevant to users running mixed estates, ARM servers, or nested virtualization labs. While not directly impacting consumer Windows, understanding these issues helps IT professionals secure virtualized environments and apply timely patches.