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netfilter: nft_set_pipapo: Actually validate intervals in fields after the first one 

Embarrassingly, nft_pipapo_insert() checked for interval validity in
the first field only.

The start_p and end_p pointers were reset to key data from the first
field at every iteration of the loop which was supposed to go over
the set fields.

Fixes: 3c4287f620 ("nf_tables: Add set type for arbitrary concatenation of ranges")
Reported-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Stefano Brivio 2022-11-24 13:04:37 +01:00 committed by Pablo Neira Ayuso
parent f2fc2280fa
commit 97d4d394b5
1 changed files with 3 additions and 2 deletions
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5
net/netfilter/nft_set_pipapo.c
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@ -1162,6 +1162,7 @@ static int nft_pipapo_insert(const struct net *net, const struct nft_set *set,
struct nft_pipapo_match *m = priv->clone;
u8 genmask = nft_genmask_next(net);
struct nft_pipapo_field *f;
const u8 *start_p, *end_p;
int i, bsize_max, err = 0;
if (nft_set_ext_exists(ext, NFT_SET_EXT_KEY_END))
@ -1202,9 +1203,9 @@ static int nft_pipapo_insert(const struct net *net, const struct nft_set *set,
}
/* Validate */
start_p = start;
end_p = end;
nft_pipapo_for_each_field(f, i, m) {
const u8 *start_p = start, *end_p = end;
if (f->rules >= (unsigned long)NFT_PIPAPO_RULE0_MAX)
return -ENOSPC;