Eric Dumazet 34fad54c25 net: __skb_flow_dissect() must cap its return value
After Tom patch, thoff field could point past the end of the buffer,
this could fool some callers.

If an skb was provided, skb->len should be the upper limit.
If not, hlen is supposed to be the upper limit.

Fixes: a6e544b0a88b ("flow_dissector: Jump to exit code in __skb_flow_dissect")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Yibin Yang <yibyang@cisco.com
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-12 23:41:53 -05:00
..
2016-02-16 20:21:48 -05:00
2016-06-03 19:37:21 -04:00
2015-04-02 14:04:59 -04:00
2016-08-30 22:27:18 -07:00
2015-11-22 11:54:10 -05:00
2016-11-03 16:16:50 -04:00
2015-10-26 22:24:22 -07:00