xen/netfront: don't read data from request on the ring page
In order to avoid a malicious backend being able to influence the local processing of a request build the request locally first and then copy it to the ring page. Any reading from the request influencing the processing in the frontend needs to be done on the local instance. Signed-off-by:Juergen Gross <jgross@suse.com> Reviewed-by:
Jan Beulich <jbeulich@suse.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
8446066b