From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Fri, 16 Jun 2023 13:22:01 +0000 (+0200)
Subject: netfilter: nf_tables: disallow updates of anonymous sets
X-Git-Tag: v6.1.36~54
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=abd3afddbf9ec41278c30486c20676c117498eef;p=thirdparty%2Fkernel%2Fstable.git

netfilter: nf_tables: disallow updates of anonymous sets

[ Upstream commit b770283c98e0eee9133c47bc03b6cc625dc94723 ]

Disallow updates of set timeout and garbage collection parameters for
anonymous sets.

Fixes: 123b99619cca ("netfilter: nf_tables: honor set timeout and garbage collection updates")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 984720964a498..7f71bdbc82672 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -4774,6 +4774,9 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info,
 		if (info->nlh->nlmsg_flags & NLM_F_REPLACE)
 			return -EOPNOTSUPP;
 
+		if (nft_set_is_anonymous(set))
+			return -EOPNOTSUPP;
+
 		err = nft_set_expr_alloc(&ctx, set, nla, exprs, &num_exprs, flags);
 		if (err < 0)
 			return err;