From 9906a88df224bc2b8be50fdb14df5eda0936fe34 Mon Sep 17 00:00:00 2001 From: Christophe Ricard Date: Tue, 31 Mar 2015 08:02:16 +0200 Subject: [PATCH] NFC: st21nfca: fix st21nfca_get_iso14443_3_uid data copy st21nfca_get_iso14443_3_uid() does not correctly copy the uid from uid_skb->data to its gate parameter. "gate = uid_skb->data;" only puts a pointer to uid_skb->data to the local variable gate. This means that in st21nfca_hci_target_from_gate() the content of "u8 uid[NFC_NFCID1_MAXSIZE]" local variable is never initialized before being used in memcpy(target->nfcid1, uid, len). Fix this by replacing the local variable assignment with a memcpy. This was found by compiling Linux with "gcc -Wunused-but-set-parameter". Acked-by: Christophe Ricard Signed-off-by: Nicolas Iooss Signed-off-by: Samuel Ortiz --- drivers/nfc/st21nfca/st21nfca.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nfc/st21nfca/st21nfca.c b/drivers/nfc/st21nfca/st21nfca.c index 24d3d24..ff70d28 100644 --- a/drivers/nfc/st21nfca/st21nfca.c +++ b/drivers/nfc/st21nfca/st21nfca.c @@ -588,7 +588,7 @@ static int st21nfca_get_iso14443_3_uid(struct nfc_hci_dev *hdev, u8 *gate, goto exit; } - gate = uid_skb->data; + memcpy(gate, uid_skb->data, uid_skb->len); *len = uid_skb->len; exit: kfree_skb(uid_skb); -- 2.7.4