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netfilter: nft_masq: correct length for loading protocol registers

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[ Upstream commit ec2c5917eb858428b2083d1c74f445aabbe8316b ]

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: 8a6bf5da1a ("netfilter: nft_masq: support port range")
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 23:22:57 +00:00 • committed by Greg Kroah-Hartman
parent ef6b379d5c
commit 8b02143c2e
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/nft_masq.c
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@ -43,7 +43,7 @@ static int nft_masq_init(const struct nft_ctx *ctx,
const struct nft_expr *expr,
const struct nlattr * const tb[])
{
u32 plen = sizeof_field(struct nf_nat_range, min_addr.all);
u32 plen = sizeof_field(struct nf_nat_range, min_proto.all);
struct nft_masq *priv = nft_expr_priv(expr);
int err;