Re: [PATCH v2 09/13] KVM: x86: Protect MSR-based index computations from Spectre-v1/L1TF attacks in x86.c

Jim Mattson
2020-01-06T20:19:05Z

On Wed, Dec 11, 2019 at 12:49 PM Marios Pomonis <pomonis@google.com> wrote:
>
> This fixes a Spectre-v1/L1TF vulnerability in set_msr_mce() and
> get_msr_mce().
> Both functions contain index computations based on the
> (attacker-controlled) MSR number.
>
> Fixes: commit 890ca9aefa78 ("KVM: Add MCE support")
>
> 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>