Anonymous sets are never used with timeout from userspace, reject this.
Exception to this rule is NFT_SET_EVAL to ensure legacy meters still work.
Fixes: 761da2935d6e ("netfilter: nf_tables: add set timeout API support")
Reported-by: lonial con <kongln9170@xxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
v2: allow NFT_SET_EVAL so meters (and use of nft_set_hash) is still possible
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 7e938c7397dd..bd21067f25cf 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -5001,6 +5001,9 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info,
if ((flags & (NFT_SET_EVAL | NFT_SET_OBJECT)) ==
(NFT_SET_EVAL | NFT_SET_OBJECT))
return -EOPNOTSUPP;
+ if ((flags & (NFT_SET_ANONYMOUS | NFT_SET_TIMEOUT | NFT_SET_EVAL)) ==
+ (NFT_SET_ANONYMOUS | NFT_SET_TIMEOUT))
+ return -EOPNOTSUPP;
}
desc.dtype = 0;
--
2.30.2
