From f5b0690d48b94e07abc90ee4f1e44565f941df53 Mon Sep 17 00:00:00 2001
From: Henning Brauer <henning@cvs.openbsd.org>
Date: Mon, 13 Jun 2005 21:02:22 +0000
Subject: check wether mask is NULL in if_group_routechange before
 dereferencing

---
 sys/net/if.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'sys/net/if.c')

diff --git a/sys/net/if.c b/sys/net/if.c
index 36ccbee3ecd..ce489f154f9 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if.c,v 1.133 2005/06/12 00:41:33 henning Exp $	*/
+/*	$OpenBSD: if.c,v 1.134 2005/06/13 21:02:21 henning Exp $	*/
 /*	$NetBSD: if.c,v 1.35 1996/05/07 05:26:04 thorpej Exp $	*/
 
 /*
@@ -1767,14 +1767,14 @@ if_group_routechange(struct sockaddr *dst, struct sockaddr *mask)
 	switch (dst->sa_family) {
 	case AF_INET:
 		if (satosin(dst)->sin_addr.s_addr == INADDR_ANY &&
-		    satosin(mask)->sin_addr.s_addr == INADDR_ANY)
+		    mask && satosin(mask)->sin_addr.s_addr == INADDR_ANY)
 			if_group_ext_build();
 		break;
 #ifdef INET6
 	case AF_INET6:
 		if (IN6_ARE_ADDR_EQUAL(&(satosin6(dst))->sin6_addr,
 		    &in6addr_any) &&
-		    IN6_ARE_ADDR_EQUAL(&(satosin6(mask))->sin6_addr,
+		    mask && IN6_ARE_ADDR_EQUAL(&(satosin6(mask))->sin6_addr,
 		    &in6addr_any))
 			if_group_ext_build();
 		break;
-- 
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