Messages in this thread | | | Date | Tue, 10 Nov 2015 16:39:39 -0800 | From | Venkatesh Srinivas <> | Subject | Re: [PATCH 1/3] KVM: x86: work around infinite loop in microcode when #AC is delivered |
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On Tue, Nov 10, 2015 at 01:22:52PM +0100, Paolo Bonzini wrote: > From: Eric Northup <digitaleric@google.com> > > It was found that a guest can DoS a host by triggering an infinite > stream of "alignment check" (#AC) exceptions. This causes the > microcode to enter an infinite loop where the core never receives > another interrupt. The host kernel panics pretty quickly due to the > effects (CVE-2015-5307). > > Signed-off-by: Eric Northup <digitaleric@google.com> > Cc: stable@vger.kernel.org > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Venkatesh Srinivas <venkateshs@google.com>
-- vs;
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