netfilter: nft_dynset: disallow object maps

[ Upstream commit 23185c6aed1ffb8fc44087880ba2767aba493779 ]

Do not allow to insert elements from datapath to objects maps.

Fixes: 8aeff920dcc9 ("netfilter: nf_tables: add stateful object reference to set elements")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c
index d1dc5c8937a5653ab480baadefcc853dad8cce55..461bdecbe7fc22ae506b174976dfff594b90d929 100644 (file)
--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c
@@ -137,6 +137,9 @@ static int nft_dynset_init(const struct nft_ctx *ctx,
        if (IS_ERR(set))
                return PTR_ERR(set);
 
+       if (set->flags & NFT_SET_OBJECT)
+               return -EOPNOTSUPP;
+
        if (set->ops->update == NULL)
                return -EOPNOTSUPP;