patch-2.4.18 linux/net/ipv4/netfilter/ipt_REDIRECT.c

• Lines: 21
• Date: Wed Jan 23 20:24:37 2002
• Orig file: linux.orig/net/ipv4/netfilter/ipt_REDIRECT.c
• Orig date: Mon Feb 18 20:18:40 2002

diff -Naur -X /home/marcelo/lib/dontdiff linux.orig/net/ipv4/netfilter/ipt_REDIRECT.c linux/net/ipv4/netfilter/ipt_REDIRECT.c
@@ -74,10 +74,17 @@
 	/* Local packets: make them go to loopback */
 	if (hooknum == NF_IP_LOCAL_OUT)
 		newdst = htonl(0x7F000001);
-	else
+	else {
+		struct in_device *indev;
+
+		/* Device might not have an associated in_device. */
+		indev = (struct in_device *)(*pskb)->dev->ip_ptr;
+		if (indev == NULL)
+			return NF_DROP;
+
 		/* Grab first address on interface. */
-		newdst = (((struct in_device *)(*pskb)->dev->ip_ptr)
-			  ->ifa_list->ifa_local);
+		newdst = indev->ifa_list->ifa_local;
+	}
 
 	/* Transfer from original range. */
 	newrange = ((struct ip_nat_multi_range)