[PATCH 6.1 36/64] netfilter: nft_ct: reject direction for ct id

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

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

[ Upstream commit 38ed1c7062ada30d7c11e7a7acc749bf27aa14aa ]

Direction attribute is ignored, reject it in case this ever needs to be
supported

Fixes: 3087c3f7c23b ("netfilter: nft_ct: Add ct id support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nft_ct.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c
index 1101665f5253..8df7564f0611 100644
--- a/net/netfilter/nft_ct.c
+++ b/net/netfilter/nft_ct.c

@@ -484,6 +484,9 @@ static int nft_ct_get_init(const struct nft_ctx *ctx,
 		break;
 #endif
 	case NFT_CT_ID:
+		if (tb[NFTA_CT_DIRECTION])
+			return -EINVAL;
+
 		len = sizeof(u32);
 		break;
 	default:

-- 
2.43.0