[PATCH v4.19-v5.10] netfilter: nf_tables: disallow timeout for anonymous sets

[Keerthana K <keerthana.kalyanasundaram@broadcom.com>]

From: Pablo Neira Ayuso <pablo@netfilter.org>

commit e26d3009efda338f19016df4175f354a9bd0a4ab upstream.

Never used from userspace, disallow these parameters.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
[Keerthana: code surrounding the patch is different
because nft_set_desc is not present in v4.19-v5.10]
Signed-off-by: Keerthana K <keerthana.kalyanasundaram@broadcom.com>
---
 net/netfilter/nf_tables_api.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 44cfc8c3f..d98ea5cb7 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3604,6 +3604,9 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk,
 		if (!(flags & NFT_SET_TIMEOUT))
 			return -EINVAL;
 
+		if (flags & NFT_SET_ANONYMOUS)
+			return -EOPNOTSUPP;
+
 		err = nf_msecs_to_jiffies64(nla[NFTA_SET_TIMEOUT], &timeout);
 		if (err)
 			return err;
@@ -3612,6 +3615,10 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk,
 	if (nla[NFTA_SET_GC_INTERVAL] != NULL) {
 		if (!(flags & NFT_SET_TIMEOUT))
 			return -EINVAL;
+
+		if (flags & NFT_SET_ANONYMOUS)
+			return -EOPNOTSUPP;
+
 		gc_int = ntohl(nla_get_be32(nla[NFTA_SET_GC_INTERVAL]));
 	}
 
-- 
2.19.0