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| author | Marios Pomonis <pomonis@google.com> | 2019-12-11 12:47:47 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-01-27 19:59:39 +0100 |
| commit | 25a5edea71b7c154b6a0b8cec14c711cafa31d26 (patch) | |
| tree | 202e992a8d119b2f56e4db179ccafaed2e14621a /arch/x86/kvm/pmu.h | |
| parent | 4bf79cb089f6b1c6c632492c0271054ce52ad766 (diff) | |
| download | lwn-25a5edea71b7c154b6a0b8cec14c711cafa31d26.tar.gz lwn-25a5edea71b7c154b6a0b8cec14c711cafa31d26.zip | |
KVM: x86: Protect MSR-based index computations in fixed_msr_to_seg_unit() from Spectre-v1/L1TF attacks
This fixes a Spectre-v1/L1TF vulnerability in fixed_msr_to_seg_unit().
This function contains index computations based on the
(attacker-controlled) MSR number.
Fixes: de9aef5e1ad6 ("KVM: MTRR: introduce fixed_mtrr_segment table")
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>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/pmu.h')
0 files changed, 0 insertions, 0 deletions