[patch 21/23] netfilter: xt_iprange: fix range inversion match

[Greg KH <gregkh@suse.de>]

[-- Attachment #1: netfilter-xt_iprange-fix-range-inversion-match.patch --]
[-- Type: text/plain, Size: 2073 bytes --]


2.6.26-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Alexey Dobriyan <adobriyan@gmail.com>

netfilter: xt_iprange: fix range inversion match

Upstream commit 6def1eb48:

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: Greg Kroah-Hartman <gregkh@suse.de>

---
 net/netfilter/xt_iprange.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/net/netfilter/xt_iprange.c
+++ b/net/netfilter/xt_iprange.c
@@ -67,7 +67,7 @@ iprange_mt4(const struct sk_buff *skb, c
 	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",
@@ -81,7 +81,7 @@ iprange_mt4(const struct sk_buff *skb, c
 	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",
@@ -123,14 +123,14 @@ iprange_mt6(const struct sk_buff *skb, c
 	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;
 	}

--