From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org,
pabeni@redhat.com, edumazet@google.com
Subject: [PATCH net 04/14] netfilter: nf_tables: disallow updates of implicit chain
Date: Thu, 25 Aug 2022 00:03:20 +0200 [thread overview]
Message-ID: <20220824220330.64283-5-pablo@netfilter.org> (raw)
In-Reply-To: <20220824220330.64283-1-pablo@netfilter.org>
Updates on existing implicit chain make no sense, disallow this.
Fixes: d0e2c7de92c7 ("netfilter: nf_tables: add NFT_CHAIN_BINDING")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_tables_api.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 62cfb0e31c40..dff2b5851bbb 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -2574,6 +2574,9 @@ static int nf_tables_newchain(struct sk_buff *skb, const struct nfnl_info *info,
nft_ctx_init(&ctx, net, skb, info->nlh, family, table, chain, nla);
if (chain != NULL) {
+ if (chain->flags & NFT_CHAIN_BINDING)
+ return -EINVAL;
+
if (info->nlh->nlmsg_flags & NLM_F_EXCL) {
NL_SET_BAD_ATTR(extack, attr);
return -EEXIST;
--
2.30.2
next prev parent reply other threads:[~2022-08-24 22:03 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-24 22:03 [PATCH net 00/14] Netfilter fixes for net Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 01/14] netfilter: ebtables: reject blobs that don't provide all entry points Pablo Neira Ayuso
2022-08-25 2:40 ` patchwork-bot+netdevbpf
2022-08-24 22:03 ` [PATCH net 02/14] netfilter: conntrack: work around exceeded receive window Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 03/14] netfilter: nft_tproxy: restrict to prerouting hook Pablo Neira Ayuso
2022-08-24 22:03 ` Pablo Neira Ayuso [this message]
2022-08-24 22:03 ` [PATCH net 05/14] netfilter: nf_tables: make table handle allocation per-netns friendly Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 06/14] netfilter: nft_payload: report ERANGE for too long offset and length Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 07/14] netfilter: nft_payload: do not truncate csum_offset and csum_type Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 08/14] netfilter: nf_tables: do not leave chain stats enabled on error Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 09/14] netfilter: nft_osf: restrict osf to ipv4, ipv6 and inet families Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 10/14] netfilter: nft_tunnel: restrict it to netdev family Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 11/14] netfilter: nf_tables: disallow binding to already bound chain Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 12/14] netfilter: flowtable: add function to invoke garbage collection immediately Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 13/14] netfilter: flowtable: fix stuck flows on cleanup due to pending work Pablo Neira Ayuso
2022-08-24 22:03 ` [PATCH net 14/14] netfilter: nf_defrag_ipv6: allow nf_conntrack_frag6_high_thresh increases Pablo Neira Ayuso
2022-08-25 2:17 ` Jakub Kicinski
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