kernel: x86/tdx: Fix "in-kernel MMIO" check

A flaw was found in the Linux kernel. Userspace can deceive the kernel into performing MMIO Memory-Mapped IO operations in TDX Trust Domain Extensions on its behalf, allowing a VE Virtualization Exception to be incorrectly handled as a in-kernel MMIO operation...

[SECURITY] Fedora 42 Update: rust-az-tdx-vtpm-0.7.4-1.fc42

VTPM based TDX attestation for Azure Confidential VMs...

AZL-50879 CVE-2024-47727 affecting package kernel for versions less than 6.6.56.1-5

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix "in-kernel MMIO" check TDX only supports kernel-initiated MMIO operations. The handlemmio function checks if the VE exception occurred in the kernel and rejects the operation if it did not. However, userspace can...