diff options
| author | Florian Westphal <fw@strlen.de> | 2016-05-06 00:51:47 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-05-06 11:50:01 +0200 |
| commit | 03d7dc5cdfe6fd4e5bd04cfc2be7ae259f956428 (patch) | |
| tree | 154c3f3f33680d9294dd10c50eb5217f2ace6887 /net/netfilter | |
| parent | cb39ad8b8ef224c544074962780bf763077d6141 (diff) | |
| download | linux-03d7dc5cdfe6fd4e5bd04cfc2be7ae259f956428.tar.gz | |
netfilter: conntrack: check netns when walking expect hash
Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/nf_conntrack_expect.c | 19 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 12 |
2 files changed, 27 insertions, 4 deletions
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c index c2f7c4f475b1..da95d740e60b 100644 --- a/net/netfilter/nf_conntrack_expect.c +++ b/net/netfilter/nf_conntrack_expect.c @@ -86,6 +86,17 @@ static unsigned int nf_ct_expect_dst_hash(const struct nf_conntrack_tuple *tuple return reciprocal_scale(hash, nf_ct_expect_hsize); } +static bool +nf_ct_exp_equal(const struct nf_conntrack_tuple *tuple, + const struct nf_conntrack_expect *i, + const struct nf_conntrack_zone *zone, + const struct net *net) +{ + return nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask) && + net_eq(net, nf_ct_net(i->master)) && + nf_ct_zone_equal_any(i->master, zone); +} + struct nf_conntrack_expect * __nf_ct_expect_find(struct net *net, const struct nf_conntrack_zone *zone, @@ -99,8 +110,7 @@ __nf_ct_expect_find(struct net *net, h = nf_ct_expect_dst_hash(tuple); hlist_for_each_entry_rcu(i, &net->ct.expect_hash[h], hnode) { - if (nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask) && - nf_ct_zone_equal_any(i->master, zone)) + if (nf_ct_exp_equal(tuple, i, zone, net)) return i; } return NULL; @@ -141,8 +151,7 @@ nf_ct_find_expectation(struct net *net, h = nf_ct_expect_dst_hash(tuple); hlist_for_each_entry(i, &net->ct.expect_hash[h], hnode) { if (!(i->flags & NF_CT_EXPECT_INACTIVE) && - nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask) && - nf_ct_zone_equal_any(i->master, zone)) { + nf_ct_exp_equal(tuple, i, zone, net)) { exp = i; break; } @@ -222,6 +231,7 @@ static inline int expect_clash(const struct nf_conntrack_expect *a, } return nf_ct_tuple_mask_cmp(&a->tuple, &b->tuple, &intersect_mask) && + net_eq(nf_ct_net(a->master), nf_ct_net(b->master)) && nf_ct_zone_equal_any(a->master, nf_ct_zone(b->master)); } @@ -231,6 +241,7 @@ static inline int expect_matches(const struct nf_conntrack_expect *a, return a->master == b->master && a->class == b->class && nf_ct_tuple_equal(&a->tuple, &b->tuple) && nf_ct_tuple_mask_equal(&a->mask, &b->mask) && + net_eq(nf_ct_net(a->master), nf_ct_net(b->master)) && nf_ct_zone_equal_any(a->master, nf_ct_zone(b->master)); } diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index e00f178c48b0..5dfb84d86143 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -2636,6 +2636,10 @@ restart: hnode) { if (l3proto && exp->tuple.src.l3num != l3proto) continue; + + if (!net_eq(nf_ct_net(exp->master), net)) + continue; + if (cb->args[1]) { if (exp != last) continue; @@ -2888,6 +2892,10 @@ static int ctnetlink_del_expect(struct net *net, struct sock *ctnl, hlist_for_each_entry_safe(exp, next, &net->ct.expect_hash[i], hnode) { + + if (!net_eq(nf_ct_exp_net(exp), net)) + continue; + m_help = nfct_help(exp->master); if (!strcmp(m_help->helper->name, name) && del_timer(&exp->timeout)) { @@ -2906,6 +2914,10 @@ static int ctnetlink_del_expect(struct net *net, struct sock *ctnl, hlist_for_each_entry_safe(exp, next, &net->ct.expect_hash[i], hnode) { + + if (!net_eq(nf_ct_exp_net(exp), net)) + continue; + if (del_timer(&exp->timeout)) { nf_ct_unlink_expect_report(exp, NETLINK_CB(skb).portid, |