Messages in this thread | | | Date | Thu, 29 Mar 2018 16:23:12 -0400 (EDT) | Subject | Re: [PATCH net] vhost: validate log when IOTLB is enabled | From | David Miller <> |
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From: "Michael S. Tsirkin" <mst@redhat.com> Date: Thu, 29 Mar 2018 15:48:22 +0300
> On Thu, Mar 29, 2018 at 04:00:04PM +0800, Jason Wang wrote: >> Vq log_base is the userspace address of bitmap which has nothing to do >> with IOTLB. So it needs to be validated unconditionally otherwise we >> may try use 0 as log_base which may lead to pin pages that will lead >> unexpected result (e.g trigger BUG_ON() in set_bit_to_user()). >> >> Fixes: 6b1e6cc7855b0 ("vhost: new device IOTLB API") >> Reported-by: syzbot+6304bf97ef436580fede@syzkaller.appspotmail.com >> Signed-off-by: Jason Wang <jasowang@redhat.com> > > Acked-by: Michael S. Tsirkin <mst@redhat.com> > > stable material I guess.
Applied and queued up for -stable.
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