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netfilter: nf_tables: disallow NFT_SET_ELEM_CATCHALL and NFT_SET_ELEM_INTERVAL_END

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commit fc0ae524b5fd2938c94d56da3f749f11eb3273d5 upstream.

These flags are mutually exclusive, report EINVAL in this case.

Fixes: aaa31047a6d2 ("netfilter: nftables: add catch-all set element support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pablo Neira Ayuso 2022-08-13 15:22:05 +02:00 committed by Greg Kroah-Hartman
parent 0df32f45be
commit 7ac21b920e
1 changed files with 3 additions and 0 deletions
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3
net/netfilter/nf_tables_api.c
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@ -5101,6 +5101,9 @@ static int nft_setelem_parse_flags(const struct nft_set *set,
if (!(set->flags & NFT_SET_INTERVAL) &&
*flags & NFT_SET_ELEM_INTERVAL_END)
return -EINVAL;
if ((*flags & (NFT_SET_ELEM_INTERVAL_END | NFT_SET_ELEM_CATCHALL)) ==
(NFT_SET_ELEM_INTERVAL_END | NFT_SET_ELEM_CATCHALL))
return -EINVAL;
return 0;
}