tree fe658830a34a330da5c2d403a7f5b059eeff4991
parent d1841533e54876f152a30ac398a34f47ad6590b1
author Lorenzo Bianconi <lorenzo.bianconi@redhat.com> 1554803240 +0200
committer David S. Miller <davem@davemloft.net> 1554962543 -0700

net: fou: do not use guehdr after iptunnel_pull_offloads in gue_udp_recv

gue tunnels run iptunnel_pull_offloads on received skbs. This can
determine a possible use-after-free accessing guehdr pointer since
the packet will be 'uncloned' running pskb_expand_head if it is a
cloned gso skb (e.g if the packet has been sent though a veth device)

Fixes: a09a4c8dd1ec ("tunnels: Remove encapsulation offloads on decap")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>