This is a note to let you know that I've just added the patch titled rndis_wlan: add return value validation to the 3.18-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-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Thu Mar 22 15:16:04 CET 2018 From: Pan Bian <bianpan2016@xxxxxxx> Date: Mon, 24 Apr 2017 08:40:28 +0800 Subject: rndis_wlan: add return value validation From: Pan Bian <bianpan2016@xxxxxxx> [ 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@xxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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@xxxxxxx are queue-3.18/rndis_wlan-add-return-value-validation.patch queue-3.18/qlcnic-fix-unchecked-return-value.patch queue-3.18/wan-pc300too-abort-path-on-failure.patch