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

[Jim Mattson]

On Wed, Dec 11, 2019 at 12:49 PM Marios Pomonis <pomonis@xxxxxxxxxx> 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@xxxxxxxxxx>
> Signed-off-by: Marios Pomonis <pomonis@xxxxxxxxxx>
> Reviewed-by: Andrew Honig <ahonig@xxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Reviewed-by: Jim Mattson <jmattson@xxxxxxxxxx>