X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=net%2Fdecnet%2Faf_decnet.c;h=13d6b1a6e0fc2b0730827d93d154d6464a3e58ec;hb=76b8ebdc4c7a8299e6365428a36cc0fb1c2a4103;hp=eebf5ac8ce18abdb7ac094a1e6de081fcbfa79aa;hpb=071f5d105a0ae93aeb02197c4ee3557e8cc57a21;p=firefly-linux-kernel-4.4.55.git

diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index eebf5ac8ce18..13d6b1a6e0fc 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -678,6 +678,9 @@ static int dn_create(struct net *net, struct socket *sock, int protocol,
 {
 	struct sock *sk;
 
+	if (protocol < 0 || protocol > SK_PROTOCOL_MAX)
+		return -EINVAL;
+
 	if (!net_eq(net, &init_net))
 		return -EAFNOSUPPORT;