Re: [PATCH net v4] net: nfc: nci: Fix parameter validation for packet data

On Tue, 23 Dec 2025 08:25:52 +0100 Michael Thalmeier wrote:

diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c index 418b84e2b260..a5cafcd10cc3 100644 --- a/net/nfc/nci/ntf.c +++ b/net/nfc/nci/ntf.c

@@ -380,6 +384,10 @@ static int nci_rf_discover_ntf_packet(struct nci_dev *ndev, pr_debug("rf_tech_specific_params_len %d\n", ntf.rf_tech_specific_params_len);

• if (skb->len < (data - skb->data) +

• 	ntf.rf_tech_specific_params_len + sizeof(ntf.ntf_type))
  

• return -EINVAL;
  

Are we validating ntf.rf_tech_specific_params_len against the extraction logic in nci_extract_rf_params_nfca_passive_poll() and friends?