netdev - Fwd: [patch] netfilter: ebt

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Message-ID: <CA+55aFwUf2+nm5GQKkZsSPs9r3AGREH=shE3+3oVeiJ18jJC4Q@mail.gmail.com>
Date:	Wed, 3 Jul 2013 11:19:09 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>
Cc:	David Miller <davem@...emloft.net>,
	Network Development <netdev@...r.kernel.org>
Subject: Fwd: [patch] netfilter: ebt_ip6: regression bug fix

People send fixes to random places, and I forward them.. I'm feeling
very managerial today.

             Linus


---------- Forwarded message ----------
From: Luis Fernando Cornachioni Estrozi <lestrozi@...inc.com>
Date: Wed, Jul 3, 2013 at 11:11 AM
Subject: [patch] netfilter: ebt_ip6: regression bug fix
To: Bart De Schuymer <bdschuym@...dora.be>
Cc: "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>


From: Luís Fernando Estrozi <lestrozi@...inc.com>

fix regression bug in ebt_ip6 which resulted in ebtables IPv6 src/dst
fields not being zeroed

Signed-off-by: Luís Fernando Estrozi <lestrozi@...inc.com>
---
this bug was introduced on commit
0898f99a267f89a7dc72cc687955f17613a711b8 on Mar 08, 2010; I'm just
returning 2 checks that existed before as suggested by Bart De Schuymer

--- linux-3.8.13/net/bridge/netfilter/ebt_ip6.c.orig    2013-07-03
12:07:25.892466692 -0300
+++ linux-3.8.13/net/bridge/netfilter/ebt_ip6.c    2013-07-03
12:29:47.272496246 -0300
@@ -48,10 +48,12 @@ ebt_ip6_mt(const struct sk_buff *skb, st
      if (info->bitmask & EBT_IP6_TCLASS &&
         FWINV(info->tclass != ipv6_get_dsfield(ih6), EBT_IP6_TCLASS))
          return false;
-    if (FWINV(ipv6_masked_addr_cmp(&ih6->saddr, &info->smsk,
-                       &info->saddr), EBT_IP6_SOURCE) ||
-        FWINV(ipv6_masked_addr_cmp(&ih6->daddr, &info->dmsk,
-                       &info->daddr), EBT_IP6_DEST))
+    if ((info->bitmask & EBT_IP6_SOURCE &&
+            FWINV(ipv6_masked_addr_cmp(&ih6->saddr, &info->smsk,
+                    &info->saddr), EBT_IP6_SOURCE)) ||
+            (info->bitmask & EBT_IP6_DEST &&
+            FWINV(ipv6_masked_addr_cmp(&ih6->daddr, &info->dmsk,
+                    &info->daddr), EBT_IP6_DEST)))
          return false;
      if (info->bitmask & EBT_IP6_PROTO) {
          uint8_t nexthdr = ih6->nexthdr;

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