netfilter: use consistent ipv4 network offset in xt_AUDIT

Even though the skb->data pointer has been moved from the link layer header to the network layer header, use the same method to calculate the offset in ipv4 and ipv6 routines. Signed-off-by: Richard Guy Briggs <[email protected]> [PM: munged subject line] Signed-off-by: Paul Moore <[email protected]>
thoughtpolice · May 2, 2017 · 0cb88b6 · 0cb88b6
1 parent f6276ac
commit 0cb88b6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/netfilter/xt_AUDIT.c b/net/netfilter/xt_AUDIT.c
@@ -76,7 +76,7 @@ static void audit_ip4(struct audit_buffer *ab, struct sk_buff *skb)
 	struct iphdr _iph;
 	const struct iphdr *ih;
 
-	ih = skb_header_pointer(skb, 0, sizeof(_iph), &_iph);
+	ih = skb_header_pointer(skb, skb_network_offset(skb), sizeof(_iph), &_iph);
 	if (!ih) {
 		audit_log_format(ab, " truncated=1");
 		return;