4 files changed, 33 insertions, 1 deletions

diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 3bc82dc83b3..94256845a05 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -647,11 +647,15 @@ static const struct nla_policy dn_ifa_policy[IFA_MAX+1] = {
 
 static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
+        struct net *net = skb->sk->sk_net;
         struct nlattr *tb[IFA_MAX+1];
         struct dn_dev *dn_db;
         struct ifaddrmsg *ifm;
         struct dn_ifaddr *ifa, **ifap;
-        int err;
+        int err = -EINVAL;
+
+        if (net != &init_net)
+                goto errout;
 
         err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy);
         if (err < 0)
@@ -681,6 +685,7 @@ errout:
 
 static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
+        struct net *net = skb->sk->sk_net;
         struct nlattr *tb[IFA_MAX+1];
         struct net_device *dev;
         struct dn_dev *dn_db;
@@ -688,6 +693,9 @@ static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
         struct dn_ifaddr *ifa;
         int err;
 
+        if (net != &init_net)
+                return -EINVAL;
+
         err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy);
         if (err < 0)
                 return err;
@@ -793,11 +801,15 @@ errout:
 
 static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 {
+        struct net *net = skb->sk->sk_net;
         int idx, dn_idx = 0, skip_ndevs, skip_naddr;
         struct net_device *dev;
         struct dn_dev *dn_db;
         struct dn_ifaddr *ifa;
 
+        if (net != &init_net)
+                return 0;
+
         skip_ndevs = cb->args[0];
         skip_naddr = cb->args[1];
 
diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c
index 3760a20d10d..5413e1b75b5 100644
--- a/net/decnet/dn_fib.c
+++ b/net/decnet/dn_fib.c
@@ -506,10 +506,14 @@ static int dn_fib_check_attr(struct rtmsg *r, struct rtattr **rta)
 
 static int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
+        struct net *net = skb->sk->sk_net;
         struct dn_fib_table *tb;
         struct rtattr **rta = arg;
         struct rtmsg *r = NLMSG_DATA(nlh);
 
+        if (net != &init_net)
+                return -EINVAL;
+
         if (dn_fib_check_attr(r, rta))
                 return -EINVAL;
 
@@ -522,10 +526,14 @@ static int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *
 
 static int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
+        struct net *net = skb->sk->sk_net;
         struct dn_fib_table *tb;
         struct rtattr **rta = arg;
         struct rtmsg *r = NLMSG_DATA(nlh);
 
+        if (net != &init_net)
+                return -EINVAL;
+
         if (dn_fib_check_attr(r, rta))
                 return -EINVAL;
 
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 2a5bb0714c7..28aeba15cf1 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -1511,6 +1511,7 @@ rtattr_failure:
  */
 static int dn_cache_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void *arg)
 {
+        struct net *net = in_skb->sk->sk_net;
         struct rtattr **rta = arg;
         struct rtmsg *rtm = NLMSG_DATA(nlh);
         struct dn_route *rt = NULL;
@@ -1519,6 +1520,9 @@ static int dn_cache_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void
         struct sk_buff *skb;
         struct flowi fl;
 
+        if (net != &init_net)
+                return -EINVAL;
+
         memset(&fl, 0, sizeof(fl));
         fl.proto = DNPROTO_NSP;
 
@@ -1596,10 +1600,14 @@ out_free:
  */
 int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb)
 {
+        struct net *net = skb->sk->sk_net;
         struct dn_route *rt;
         int h, s_h;
         int idx, s_idx;
 
+        if (net != &init_net)
+                return 0;
+
         if (NLMSG_PAYLOAD(cb->nlh, 0) < sizeof(struct rtmsg))
                 return -EINVAL;
         if (!(((struct rtmsg *)NLMSG_DATA(cb->nlh))->rtm_flags&RTM_F_CLONED))
diff --git a/net/decnet/dn_table.c b/net/decnet/dn_table.c
index fda0772fa21..a3bdb8dd1fb 100644
--- a/net/decnet/dn_table.c
+++ b/net/decnet/dn_table.c
@@ -463,12 +463,16 @@ static int dn_fib_table_dump(struct dn_fib_table *tb, struct sk_buff *skb,
 
 int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb)
 {
+        struct net *net = skb->sk->sk_net;
         unsigned int h, s_h;
         unsigned int e = 0, s_e;
         struct dn_fib_table *tb;
         struct hlist_node *node;
         int dumped = 0;
 
+        if (net != &init_net)
+                return 0;
+
         if (NLMSG_PAYLOAD(cb->nlh, 0) >= sizeof(struct rtmsg) &&
                 ((struct rtmsg *)NLMSG_DATA(cb->nlh))->rtm_flags&RTM_F_CLONED)
                         return dn_cache_dump(skb, cb);