linux-kernel - [FYI PATCH 0/3] CVE-2020-2732

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Date:   Mon, 24 Feb 2020 19:56:33 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     oupton@...gle.com
Subject: [FYI PATCH 0/3] CVE-2020-2732

vmx_check_intercept is not yet fully implemented by KVM on Intel processors,
causing e.g. the I/O or MSR interception bitmaps not to be checked.
In general we can just disallow instruction emulation on behalf of L1,
but this series also implements I/O port checks.

Paolo

Oliver Upton (2):
  KVM: nVMX: Refactor IO bitmap checks into helper function
  KVM: nVMX: Check IO instruction VM-exit conditions

Paolo Bonzini (1):
  KVM: nVMX: Don't emulate instructions in guest mode

 arch/x86/kvm/vmx/nested.c | 39 ++++++++++++++++++++-----------
 arch/x86/kvm/vmx/nested.h |  2 ++
 arch/x86/kvm/vmx/vmx.c    | 59 +++++++++++++++++++++++++++++++++++++++++------
 3 files changed, 79 insertions(+), 21 deletions(-)

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1.8.3.1