Re: [PATCH v2 10/13] KVM: x86: Protect memory accesses from Spectre-v1/L1TF attacks in x86.c

On Wed, Dec 11, 2019 at 12:49 PM Marios Pomonis pomonis@google.com wrote:

This fixes Spectre-v1/L1TF vulnerabilities in vmx_read_guest_seg_selector(), vmx_read_guest_seg_base(), vmx_read_guest_seg_limit() and vmx_read_guest_seg_ar(). These functions contain index computations based on the (attacker-influenced) segment value.

Fixes: commit 2fb92db1ec08 ("KVM: VMX: Cache vmcs segment fields")

Signed-off-by: Nick Finco nifi@google.com Signed-off-by: Marios Pomonis pomonis@google.com Reviewed-by: Andrew Honig ahonig@google.com Cc: stable@vger.kernel.org

Reviewed-by: Jim Mattson jmattson@google.com