diff -ru linux-2.6.12-rc4/net/netlink/af_netlink.c linux-2.6.12-work/net/netlink/af_netlink.c
--- linux-2.6.12-rc4/net/netlink/af_netlink.c	2005-05-11 11:10:20.000000000 +0200
+++ linux-2.6.12-work/net/netlink/af_netlink.c	2005-05-12 00:08:33.634344658 +0200
@@ -697,6 +697,7 @@
 
 	if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf &&
 	    !test_bit(0, &nlk->state)) {
+		skb_orphan(skb);
 		skb_set_owner_r(skb, sk);
 		skb_queue_tail(&sk->sk_receive_queue, skb);
 		sk->sk_data_ready(sk, skb->len);