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netfilter pull request 25-01-30

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Merge tag 'nf-25-01-30' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following batch contains one Netfilter fix:

1) Reject mismatching sum of field_len with set key length which allows
   to create a set without inconsistent pipapo rule width and set key
   length.

* tag 'nf-25-01-30' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: nf_tables: reject mismatching sum of field_len with set key length
====================

Link: https://patch.msgid.link/20250130113307.2327470-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2025-01-30 09:01:00 -08:00
commit dfffaccffc
1 changed files with 4 additions and 4 deletions
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8
net/netfilter/nf_tables_api.c
View File

@ -5078,7 +5078,7 @@ static int nft_set_desc_concat_parse(const struct nlattr *attr,
static int nft_set_desc_concat(struct nft_set_desc *desc,
const struct nlattr *nla)
{
u32 num_regs = 0, key_num_regs = 0;
u32 len = 0, num_regs;
struct nlattr *attr;
int rem, err, i;
@ -5092,12 +5092,12 @@ static int nft_set_desc_concat(struct nft_set_desc *desc,
}
for (i = 0; i < desc->field_count; i++)
num_regs += DIV_ROUND_UP(desc->field_len[i], sizeof(u32));
len += round_up(desc->field_len[i], sizeof(u32));
key_num_regs = DIV_ROUND_UP(desc->klen, sizeof(u32));
if (key_num_regs != num_regs)
if (len != desc->klen)
return -EINVAL;
num_regs = DIV_ROUND_UP(desc->klen, sizeof(u32));
if (num_regs > NFT_REG32_COUNT)
return -E2BIG;