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

Jim Mattson
2020-01-06T20:19:25Z

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>