[PATCH 6.12 061/567] netfilter: nf_tables: remove redundant chain validation on register store

Greg Kroah-Hartman
2026-01-06T17:17:42Z

From: Pablo Neira Ayuso <pablo@netfilter.org>

[ Upstream commit a67fd55f6a09f4119b7232c19e0f348fe31ab0db ]

This validation predates the introduction of the state machine that
determines when to enter slow path validation for error reporting.

Currently, table validation is perform when:

- new rule contains expressions that need validation.
- new set element with jump/goto verdict.

Validation on register store skips most checks with no basechains, still
this walks the graph searching for loops and ensuring expressions are
called from the right hook. Remove this.

Fixes: a654de8fdc18 ("netfilter: nf_tables: fix chain dependency validation")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/nf_tables_api.c | 11 -----------
1 file changed, 11 deletions(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index e1c617b488889..b4741fb337988 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -11211,21 +11211,10 @@ static int nft_validate_register_store(const struct nft_ctx *ctx,
enum nft_data_types type,
unsigned int len)
{
- int err;
-
switch (reg) {
case NFT_REG_VERDICT:
if (type != NFT_DATA_VERDICT)
return -EINVAL;
-
- if (data != NULL &&
- (data->verdict.code == NFT_GOTO ||
- data->verdict.code == NFT_JUMP)) {
- err = nft_chain_validate(ctx, data->verdict.chain);
- if (err < 0)
- return err;
- }
-
break;
default:
if (type != NFT_DATA_VALUE)
--
2.51.0