From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Mon, 20 Oct 2008 10:32:21 +0000 (-0700)
Subject: netfilter: xt_iprange: fix range inversion match
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6def1eb48101600884ebed56de03041fadc7a985;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

netfilter: xt_iprange: fix range inversion match

Inverted IPv4 v1 and IPv6 v0 matches don't match anything since 2.6.25-rc1!

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/netfilter/xt_iprange.c b/net/netfilter/xt_iprange.c
index 6f62c36948d9..7ac54eab0b00 100644
--- a/net/netfilter/xt_iprange.c
+++ b/net/netfilter/xt_iprange.c
@@ -61,7 +61,7 @@ iprange_mt4(const struct sk_buff *skb, const struct xt_match_param *par)
 	if (info->flags & IPRANGE_SRC) {
 		m  = ntohl(iph->saddr) < ntohl(info->src_min.ip);
 		m |= ntohl(iph->saddr) > ntohl(info->src_max.ip);
-		m ^= info->flags & IPRANGE_SRC_INV;
+		m ^= !!(info->flags & IPRANGE_SRC_INV);
 		if (m) {
 			pr_debug("src IP " NIPQUAD_FMT " NOT in range %s"
 			         NIPQUAD_FMT "-" NIPQUAD_FMT "\n",
@@ -75,7 +75,7 @@ iprange_mt4(const struct sk_buff *skb, const struct xt_match_param *par)
 	if (info->flags & IPRANGE_DST) {
 		m  = ntohl(iph->daddr) < ntohl(info->dst_min.ip);
 		m |= ntohl(iph->daddr) > ntohl(info->dst_max.ip);
-		m ^= info->flags & IPRANGE_DST_INV;
+		m ^= !!(info->flags & IPRANGE_DST_INV);
 		if (m) {
 			pr_debug("dst IP " NIPQUAD_FMT " NOT in range %s"
 			         NIPQUAD_FMT "-" NIPQUAD_FMT "\n",
@@ -114,14 +114,14 @@ iprange_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
 	if (info->flags & IPRANGE_SRC) {
 		m  = iprange_ipv6_sub(&iph->saddr, &info->src_min.in6) < 0;
 		m |= iprange_ipv6_sub(&iph->saddr, &info->src_max.in6) > 0;
-		m ^= info->flags & IPRANGE_SRC_INV;
+		m ^= !!(info->flags & IPRANGE_SRC_INV);
 		if (m)
 			return false;
 	}
 	if (info->flags & IPRANGE_DST) {
 		m  = iprange_ipv6_sub(&iph->daddr, &info->dst_min.in6) < 0;
 		m |= iprange_ipv6_sub(&iph->daddr, &info->dst_max.in6) > 0;
-		m ^= info->flags & IPRANGE_DST_INV;
+		m ^= !!(info->flags & IPRANGE_DST_INV);
 		if (m)
 			return false;
 	}