Messages in this thread | | | Date | Sun, 17 Mar 2013 20:50:22 +0200 | From | "Michael S. Tsirkin" <> | Subject | Re: [PATCH net] vhost/net: fix heads usage of ubuf_info |
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On Sun, Mar 17, 2013 at 02:29:55PM -0400, David Miller wrote: > From: "Michael S. Tsirkin" <mst@redhat.com> > Date: Sun, 17 Mar 2013 14:46:09 +0200 > > > ubuf info allocator uses guest controlled head as an index, > > so a malicious guest could put the same head entry in the ring twice, > > and we will get two callbacks on the same value. > > To fix use upend_idx which is guaranteed to be unique. > > > > Reported-by: Rusty Russell <rusty@rustcorp.com.au> > > Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > > Applied and queued up for -stable, thanks.
OK I'll drop it from my tree then.
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