This is a note to let you know that I've just added the patch titled netfilter: nft_nat: correct length for loading protocol registers to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: netfilter-nft_nat-correct-length-for-loading-protoco.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit af445a31aa8337be9fa94a0802cc27340d3dea03 Author: Jeremy Sowden <jeremy@xxxxxxxxxx> Date: Tue Mar 7 23:22:56 2023 +0000 netfilter: nft_nat: correct length for loading protocol registers [ Upstream commit 068d82e75d537b444303b8c449a11e51ea659565 ] 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: d07db9884a5f ("netfilter: nf_tables: introduce nft_validate_register_load()") Signed-off-by: Jeremy Sowden <jeremy@xxxxxxxxxx> Reviewed-by: Florian Westphal <fw@xxxxxxxxx> Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/net/netfilter/nft_nat.c b/net/netfilter/nft_nat.c index db8f9116eeb43..cd4eb4996aff3 100644 --- a/net/netfilter/nft_nat.c +++ b/net/netfilter/nft_nat.c @@ -226,7 +226,7 @@ static int nft_nat_init(const struct nft_ctx *ctx, const struct nft_expr *expr, priv->flags |= NF_NAT_RANGE_MAP_IPS; } - plen = sizeof_field(struct nf_nat_range, min_addr.all); + plen = sizeof_field(struct nf_nat_range, min_proto.all); if (tb[NFTA_NAT_REG_PROTO_MIN]) { err = nft_parse_register_load(tb[NFTA_NAT_REG_PROTO_MIN], &priv->sreg_proto_min, plen);