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KVM: x86: Add memory barrier on vmcs field lookup
authorAndrew Honig <ahonig@google.com>
Wed, 10 Jan 2018 18:12:03 +0000 (10:12 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 Jan 2018 08:38:54 +0000 (09:38 +0100)
commit012df71d2980d9ddf8039da09b2d5741189da8f1
tree48ad4dc2634669d6d56d71bb1101910596514188tree | snapshot
parent431fd501aa3f1f6a6e44a2022f7be18d8dd60b32commit | diff
KVM: x86: Add memory barrier on vmcs field lookup

commit 75f139aaf896d6fdeec2e468ddfa4b2fe469bf40 upstream.

This adds a memory barrier when performing a lookup into
the vmcs_field_to_offset_table.  This is related to
CVE-2017-5753.

Signed-off-by: Andrew Honig <ahonig@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kvm/vmx.c diff | blob | history