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netfilter: nft_redir: correct length for loading protocol registers

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[ Upstream commit 1f617b6b4c7a3d5ea7a56abb83a4c27733b60c2f ]

The values in the protocol registers are two bytes wide.  However, when
parsing the register loads, the code currently uses the larger 16-byte
size of a `union nf_inet_addr`.  Change it to use the (correct) size of
a `union nf_conntrack_man_proto` instead.

Fixes: d07db9884a ("netfilter: nf_tables: introduce nft_validate_register_load()")
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jeremy Sowden 2023-03-07 23:22:58 +00:00 committed by Greg Kroah-Hartman
parent 3a0f8ea35d
commit c144dff64e
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/nft_redir.c
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@ -48,7 +48,7 @@ static int nft_redir_init(const struct nft_ctx *ctx,
unsigned int plen;
int err;
plen = sizeof_field(struct nf_nat_range, min_addr.all);
plen = sizeof_field(struct nf_nat_range, min_proto.all);
if (tb[NFTA_REDIR_REG_PROTO_MIN]) {
err = nft_parse_register_load(tb[NFTA_REDIR_REG_PROTO_MIN],
&priv->sreg_proto_min, plen);