From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 1/6] netfilter: x_tables: set module owner for icmp(6) matches
Date: Mon, 9 Jul 2018 19:18:59 +0200 [thread overview]
Message-ID: <20180709171904.2460-2-pablo@netfilter.org> (raw)
In-Reply-To: <20180709171904.2460-1-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
nft_compat relies on xt_request_find_match to increment
refcount of the module that provides the match/target.
The (builtin) icmp matches did't set the module owner so it
was possible to rmmod ip(6)tables while icmp extensions were still in use.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/ipv4/netfilter/ip_tables.c | 1 +
net/ipv6/netfilter/ip6_tables.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index ca0dad90803a..e77872c93c20 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1898,6 +1898,7 @@ static struct xt_match ipt_builtin_mt[] __read_mostly = {
.checkentry = icmp_checkentry,
.proto = IPPROTO_ICMP,
.family = NFPROTO_IPV4,
+ .me = THIS_MODULE,
},
};
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 7eab959734bc..daf2e9e9193d 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -1909,6 +1909,7 @@ static struct xt_match ip6t_builtin_mt[] __read_mostly = {
.checkentry = icmp6_checkentry,
.proto = IPPROTO_ICMPV6,
.family = NFPROTO_IPV6,
+ .me = THIS_MODULE,
},
};
--
2.11.0
next prev parent reply other threads:[~2018-07-09 17:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-09 17:18 [PATCH 0/6] Netfilter fixes for net Pablo Neira Ayuso
2018-07-09 17:18 ` Pablo Neira Ayuso [this message]
2018-07-09 17:19 ` [PATCH 2/6] netfilter: nf_tproxy: fix possible non-linear access to transport header Pablo Neira Ayuso
2018-07-09 17:19 ` [PATCH 3/6] netfilter: nf_tables: place all set backends in one single module Pablo Neira Ayuso
2018-07-09 17:19 ` [PATCH 4/6] netfilter: nft_compat: explicitly reject ERROR and standard target Pablo Neira Ayuso
2018-07-09 17:19 ` [PATCH 5/6] netfilter: nf_conntrack: Fix possible possible crash on module loading Pablo Neira Ayuso
2018-07-09 17:19 ` [PATCH 6/6] netfilter: ipv6: nf_defrag: drop skb dst before queueing Pablo Neira Ayuso
2018-07-09 21:24 ` [PATCH 0/6] Netfilter fixes for net David Miller
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