af_key: Fix memory leak in key_notify_policy.



We leak the allocated out_skb in case
pfkey_xfrm_policy2msg() fails. Fix this
by freeing it on error.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

parent 374d1b5a

net/key/af_key.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -2202,8 +2202,10 @@ static int key_notify_policy(struct xfrm_policy *xp, int dir, const struct km_ev
		return PTR_ERR(out_skb);

		err = pfkey_xfrm_policy2msg(out_skb, xp, dir);
		if (err < 0)
		if (err < 0) {
		kfree_skb(out_skb);
		return err;
		}

		out_hdr = (struct sadb_msg *) out_skb->data;
		out_hdr->sadb_msg_version = PF_KEY_V2;