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| author |   Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2019-10-30 19:01:31 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-01-30 18:45:54 +0100 |
| commit | 8c6de56a42e0c657955e12b882a81ef07d1d073e (patch) | |
| tree | 46a20e7ac5a0365ffa0d5bf414955ebf3f36db46 /virt/kvm/kvm_main.c | |
| parent | Merge tag 'trace-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace (diff) | |
| download | linux-dev-8c6de56a42e0c657955e12b882a81ef07d1d073e.tar.xz linux-dev-8c6de56a42e0c657955e12b882a81ef07d1d073e.zip | |
x86/kvm: Be careful not to clear KVM_VCPU_FLUSH_TLB bit
kvm_steal_time_set_preempted() may accidentally clear KVM_VCPU_FLUSH_TLB
bit if it is called more than once while VCPU is preempted.
This is part of CVE-2019-3016.
(This bug was also independently discovered by Jim Mattson
<jmattson@google.com>)
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm/kvm_main.c')
0 files changed, 0 insertions, 0 deletions