Re: [PATCH for-7.0] virtio-iommu: use-after-free fix

[Michael S. Tsirkin]

On Thu, Apr 07, 2022 at 11:03:16AM +0100, Peter Maydell wrote:
> On Thu, 7 Apr 2022 at 10:52, Michael S. Tsirkin <mst@redhat.com> wrote:
> >
> > From: Wentao Liang <Wentao_Liang_g@163.com>
> >
> > A potential Use-after-free was reported in virtio_iommu_handle_command
> > when using virtio-iommu:
> >
> > > I find a potential Use-after-free in QEMU 6.2.0, which is in
> > > virtio_iommu_handle_command() (./hw/virtio/virtio-iommu.c).
> 
> So, this isn't a regression. Do you think it's critically necessary
> it goes in 7.0, or is it in the category "put it into 7.0 if we
> need an rc4 for some other reason anyway" ?
> 
> (I have a feeling we'll need an rc4, but we'll see.)
> 
> thanks
> -- PMM

I am concerned it can be used to trigger a CVE but I could not
find a way. So I would say if there's an rc4 pls include it
but if not then we can pick it up in stable.

-- 
MST