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Date:   Wed, 31 Aug 2022 11:46:11 -0400
From:   "Michael S. Tsirkin" <mst@redhat.com>
To:     Maxime Coquelin <maxime.coquelin@redhat.com>
Cc:     jasowang@redhat.com, Greg KH <gregkh@linuxfoundation.org>,
        linux-kernel@vger.kernel.org,
        virtualization@lists.linux-foundation.org, elic@nvidia.com,
        guanjun@linux.alibaba.com, parav@nvidia.com,
        gautam.dawar@xilinx.com, dan.carpenter@oracle.com,
        xieyongji@bytedance.com, stable@vger.kernel.org
Subject: Re: [PATCH v2] vduse: prevent uninitialized memory accesses
Message-ID: <20220831114534-mutt-send-email-mst@kernel.org>
References: <20220829073424.5677-1-maxime.coquelin@redhat.com>
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On Wed, Aug 31, 2022 at 05:01:11PM +0200, Maxime Coquelin wrote:
> On 8/29/22 09:48, Greg KH wrote:
> > On Mon, Aug 29, 2022 at 09:34:24AM +0200, Maxime Coquelin wrote:
> > > If the VDUSE application provides a smaller config space
> > > than the driver expects, the driver may use uninitialized
> > > memory from the stack.
> > > 
> > > This patch prevents it by initializing the buffer passed by
> > > the driver to store the config value.
> > > 
> > > This fix addresses CVE-2022-2308.
> > > 
> > > Cc: xieyongji@bytedance.com
> > > Cc: stable@vger.kernel.org # v5.15+
> > > Fixes: c8a6153b6c59 ("vduse: Introduce VDUSE - vDPA Device in Userspace")
> > > 
> > > Acked-by: Jason Wang <jasowang@redhat.com>
> > > Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> > 
> > Please no blank line above the Acked-by: line here if possible.
> 
> Sure.
> 
> Jason, do you prefer I post a new revision with this single change or
> you will handle it while applying? Either way is fine to me.
> 
> Thanks,
> Maxime

I queue these normally.

> > thanks,
> > 
> > greg k-h
> >