Patch "nfc: netlink: Add check on NFC_ATTR_VENDOR_DATA" has been added to the 4.2-stable tree

Patch "nfc: netlink: Add check on NFC_ATTR_VENDOR_DATA" has been added to the 4.2-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    nfc: netlink: Add check on NFC_ATTR_VENDOR_DATA

to the 4.2-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     nfc-netlink-add-check-on-nfc_attr_vendor_data.patch
and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From fe202fe95564023223ce1910c9e352f391abb1d5 Mon Sep 17 00:00:00 2001
From: Christophe Ricard <christophe.ricard@gmail.com>
Date: Fri, 14 Aug 2015 22:33:40 +0200
Subject: nfc: netlink: Add check on NFC_ATTR_VENDOR_DATA

From: Christophe Ricard <christophe.ricard@gmail.com>

commit fe202fe95564023223ce1910c9e352f391abb1d5 upstream.

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.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/nfc/netlink.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1518,8 +1518,8 @@ static int nfc_genl_vendor_cmd(struct sk
 	if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds)
 		return -ENODEV;
 
-	data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
-	if (data) {
+	if (info->attrs[NFC_ATTR_VENDOR_DATA]) {
+		data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
 		data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
 		if (data_len == 0)
 			return -EINVAL;


Patches currently in stable-queue which might be from christophe.ricard@gmail.com are

queue-4.2/nfc-st-nci-fix-typo-when-changing-from-st21nfcb-to-st-nci.patch
queue-4.2/nfc-st-nci-remove-duplicate-file-platform_data-st_nci.h.patch
queue-4.2/nfc-st-nci-fix-non-accurate-comment-for-st_nci_i2c_read.patch
queue-4.2/nfc-st-nci-free-data-with-irrelevant-ndlc-pcb_sync-value.patch
queue-4.2/nfc-st-nci-fix-use-of-uninitialized-variables-in-error-path.patch
queue-4.2/nfc-netlink-warning-fix.patch
queue-4.2/nfc-st-nci-remove-data-from-ack_pending_q-when-receiving-a-sync_ack.patch
queue-4.2/nfc-netlink-add-check-on-nfc_attr_vendor_data.patch
queue-4.2/nfc-nci-hci-add-check-on-skb-nci_hci_send_cmd-parameter.patch
queue-4.2/nfc-st21nfca-fix-use-of-uninitialized-variables-in-error-path.patch