Re: Patch "vsock/virtio: fix potential unbounded skb queue" has been added to the 6.6-stable tree

["Michael S. Tsirkin" <mst@redhat.com>]

On Fri, May 15, 2026 at 05:41:48PM +0200, Greg KH wrote:
> On Fri, May 15, 2026 at 11:36:12AM -0400, Michael S. Tsirkin wrote:
> > On Fri, May 15, 2026 at 05:21:53PM +0200, gregkh@linuxfoundation.org wrote:
> > > 
> > > This is a note to let you know that I've just added the patch titled
> > > 
> > >     vsock/virtio: fix potential unbounded skb queue
> > > 
> > > to the 6.6-stable tree which can be found at:
> > >     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> > > 
> > > The filename of the patch is:
> > >      vsock-virtio-fix-potential-unbounded-skb-queue.patch
> > > and it can be found in the queue-6.6 subdirectory.
> > > 
> > > If you, or anyone else, feels it should not be added to the stable tree,
> > > please let <stable@vger.kernel.org> know about it.
> > > 
> > 
> > Yea I have some doubts. It fixes the DoS at the cost of losing
> > messages. We are trying to fix that upstream now, maybe wait
> > for that?
> 
> being bug compatible is good!  :(

Well you are the maintainer. Up to you.

> What's the status of that fix?
> 
> thanks,
> 
> greg k-h


Stefano posted v3 and is working on v4.

>  Should it be reverted elsewhere?

Donnu. With the change we have no DoS but the socket gets silently
broken.  Eric felt given the brokenness is  upstream already it's better
to work on a fix on top, not revert.

-- 
MST