Patch "rndis_wlan: add return value validation" has been added to the 4.4-stable tree

[<gregkh@linuxfoundation.org>]

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

    rndis_wlan: add return value validation

to the 4.4-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:
     rndis_wlan-add-return-value-validation.patch
and it can be found in the queue-4.4 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 foo@baz Thu Mar 22 14:57:32 CET 2018
From: Pan Bian <bianpan2016@163.com>
Date: Mon, 24 Apr 2017 08:40:28 +0800
Subject: rndis_wlan: add return value validation

From: Pan Bian <bianpan2016@163.com>


[ Upstream commit 9dc7efd3978aa67ae598129d2a3f240b390ce508 ]

Function create_singlethread_workqueue() will return a NULL pointer if
there is no enough memory, and its return value should be validated
before using. However, in function rndis_wlan_bind(), its return value
is not checked. This may cause NULL dereference bugs. This patch fixes
it.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/wireless/rndis_wlan.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -3425,6 +3425,10 @@ static int rndis_wlan_bind(struct usbnet
 
 	/* because rndis_command() sleeps we need to use workqueue */
 	priv->workqueue = create_singlethread_workqueue("rndis_wlan");
+	if (!priv->workqueue) {
+		wiphy_free(wiphy);
+		return -ENOMEM;
+	}
 	INIT_WORK(&priv->work, rndis_wlan_worker);
 	INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
 	INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);


Patches currently in stable-queue which might be from bianpan2016@163.com are

queue-4.4/mt7601u-check-return-value-of-alloc_skb.patch
queue-4.4/rndis_wlan-add-return-value-validation.patch
queue-4.4/staging-wilc1000-fix-unchecked-return-value.patch
queue-4.4/qlcnic-fix-unchecked-return-value.patch
queue-4.4/wan-pc300too-abort-path-on-failure.patch