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Commit fe202fe9 authored by Christophe Ricard's avatar Christophe Ricard Committed by Samuel Ortiz
Browse files

nfc: netlink: Add check on NFC_ATTR_VENDOR_DATA 



NFC_ATTR_VENDOR_DATA is an optional vendor_cmd argument.
The current code was potentially using a non existing argument
leading to potential catastrophic results.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarChristophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 94b85938

net/nfc/netlink.c

+2 −2
Original line number Diff line number Diff line
@@ -1518,8 +1518,8 @@ static int nfc_genl_vendor_cmd(struct sk_buff *skb, 
	if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds)

		return -ENODEV;



	if (info->attrs[NFC_ATTR_VENDOR_DATA]) {

		data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);

	if (data) {

		data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);

		if (data_len == 0)

			return -EINVAL;