xfrm: Reset encapsulation field of the skb before transformation



The inner headers are invalid after a xfrm transformation.
So reset the skb encapsulation field to ensure nobody tries
to access the inner headers.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

parent 6ad3122a

net/xfrm/xfrm_output.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -99,6 +99,9 @@ static int xfrm_output_one(struct sk_buff *skb, int err)

	skb_dst_force(skb);		skb_dst_force(skb);

			/* Inner headers are invalid now. */
			skb->encapsulation = 0;

	err = x->type->output(x, skb);		err = x->type->output(x, skb);
	if (err == -EINPROGRESS)		if (err == -EINPROGRESS)
	goto out;		goto out;