From 6d1fafcaecaa2e66eb9861a39d22fc7380ce6f78 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Thu, 22 Nov 2012 01:32:46 +0000
Subject: netfilter: ctnetlink: nla_policy updates

Add stricter checking for a few attributes.
Note that these changes don't fix any bug in the current code base.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index c24a00a..4e078cd 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -898,7 +898,8 @@ ctnetlink_parse_zone(const struct nlattr *attr, u16 *zone)
 }
 
 static const struct nla_policy help_nla_policy[CTA_HELP_MAX+1] = {
-	[CTA_HELP_NAME]		= { .type = NLA_NUL_STRING },
+	[CTA_HELP_NAME]		= { .type = NLA_NUL_STRING,
+				    .len = NF_CT_HELPER_NAME_LEN - 1 },
 };
 
 static inline int
@@ -932,6 +933,8 @@ static const struct nla_policy ct_nla_policy[CTA_MAX+1] = {
 	[CTA_ID]		= { .type = NLA_U32 },
 	[CTA_NAT_DST]		= { .type = NLA_NESTED },
 	[CTA_TUPLE_MASTER]	= { .type = NLA_NESTED },
+	[CTA_NAT_SEQ_ADJ_ORIG]  = { .type = NLA_NESTED },
+	[CTA_NAT_SEQ_ADJ_REPLY] = { .type = NLA_NESTED },
 	[CTA_ZONE]		= { .type = NLA_U16 },
 	[CTA_MARK_MASK]		= { .type = NLA_U32 },
 };
@@ -2322,7 +2325,8 @@ static const struct nla_policy exp_nla_policy[CTA_EXPECT_MAX+1] = {
 	[CTA_EXPECT_MASK]	= { .type = NLA_NESTED },
 	[CTA_EXPECT_TIMEOUT]	= { .type = NLA_U32 },
 	[CTA_EXPECT_ID]		= { .type = NLA_U32 },
-	[CTA_EXPECT_HELP_NAME]	= { .type = NLA_NUL_STRING },
+	[CTA_EXPECT_HELP_NAME]	= { .type = NLA_NUL_STRING,
+				    .len = NF_CT_HELPER_NAME_LEN - 1 },
 	[CTA_EXPECT_ZONE]	= { .type = NLA_U16 },
 	[CTA_EXPECT_FLAGS]	= { .type = NLA_U32 },
 	[CTA_EXPECT_CLASS]	= { .type = NLA_U32 },
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 61f9285..83876e9 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -1353,6 +1353,8 @@ static const struct nla_policy tcp_timeout_nla_policy[CTA_TIMEOUT_TCP_MAX+1] = {
 	[CTA_TIMEOUT_TCP_TIME_WAIT]	= { .type = NLA_U32 },
 	[CTA_TIMEOUT_TCP_CLOSE]		= { .type = NLA_U32 },
 	[CTA_TIMEOUT_TCP_SYN_SENT2]	= { .type = NLA_U32 },
+	[CTA_TIMEOUT_TCP_RETRANS]	= { .type = NLA_U32 },
+	[CTA_TIMEOUT_TCP_UNACK]		= { .type = NLA_U32 },
 };
 #endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
 
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