Haishuang Yan dfb98836f9 ip6_tunnel: fix possible use-after-free on xmit
[ Upstream commit 01f5bffad555f8e22a61f4b1261fe09cf1b96994 ]

ip4ip6/ip6ip6 tunnels run iptunnel_handle_offloads on xmit which
can cause a possible use-after-free accessing iph/ipv6h pointer
since the packet will be 'uncloned' running pskb_expand_head if
it is a cloned gso skb.

Fixes: 0e9a709560db ("ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets")
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-11 12:22:17 +02:00
..
2019-05-08 07:19:07 +02:00
2019-06-22 08:17:22 +02:00
2016-10-20 11:23:08 -04:00
2019-03-23 13:19:44 +01:00
2019-03-19 13:14:09 +01:00
2019-01-09 16:16:41 +01:00
2018-11-10 07:42:58 -08:00