netfilter: nfnetlink_cttimeout: fix incomplete dumping of objects

Fix broken incomplete object dumping if the list of objects does not
fit into one single netlink message.

Reported-by: Gabriel Lazar <Gabriel.Lazar@com.utcluj.ro>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c
index 701c88a20fea..65074dfb9383 100644
--- a/net/netfilter/nfnetlink_cttimeout.c
+++ b/net/netfilter/nfnetlink_cttimeout.c
@@ -220,9 +220,12 @@ ctnl_timeout_dump(struct sk_buff *skb, struct netlink_callback *cb)
 
         rcu_read_lock();
         list_for_each_entry_rcu(cur, &cttimeout_list, head) {
-                if (last && cur != last)
-                        continue;
+                if (last) {
+                        if (cur != last)
+                                continue;
 
+                        last = NULL;
+                }
                 if (ctnl_timeout_fill_info(skb, NETLINK_CB(cb->skb).portid,
                                            cb->nlh->nlmsg_seq,
                                            NFNL_MSG_TYPE(cb->nlh->nlmsg_type),