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(parent: ccaa16a) | patch
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)
committerBen Hutchings <ben@decadent.org.uk>
Sat, 3 Mar 2018 15:50:58 +0000 (15:50 +0000)
commit39a34000fbdf7b64db95112686658662fd723841
tree988792b455117f0ef8b18cc1be00635634a95ee7tree | snapshot
parentccaa16ab073a8e0b94ce1d32d9da1199adf712dfcommit | 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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
arch/x86/kvm/vmx.c diff | blob | history
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