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netfilter: nf_tables: disallow anonymous set with timeout flag 

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.

Cc: stable@vger.kernel.org
Fixes: 761da2935d ("netfilter: nf_tables: add set timeout API support")
Reported-by: lonial con <kongln9170@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2024-03-01 00:11:10 +01:00
parent c055fc00c0
commit 16603605b6
1 changed files with 3 additions and 0 deletions
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3
net/netfilter/nf_tables_api.c
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@ -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;