Patch "misc: mic: double free on ioctl error path" has been added to the 4.9-stable tree

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

misc: mic: double free on ioctl error path

to the 4.9-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:
misc-mic-double-free-on-ioctl-error-path.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Dan Carpenter <[email protected]>
Date: Mon, 9 Jan 2017 11:20:16 +0300
Subject: misc: mic: double free on ioctl error path

From: Dan Carpenter <[email protected]>

commit 816c9311f1144a03da1fdc4feb2f6b0d3299fca0 upstream.

This function only has one caller. Freeing "vdev" here leads to a use after free bug. There are several other error paths in this function but this is the only one which frees "vdev". It looks like the kfree() can be safely removed.

---
 drivers/misc/mic/vop/vop_vringh.c |    1 -
 1 file changed, 1 deletion(-)

@@ -292,7 +292,6 @@ static int vop_virtio_add_device(struct
 	if (ret) {
 		dev_err(vop_dev(vdev), "%s %d err %d\n",
 			__func__, __LINE__, ret);
-		kfree(vdev);
 		return ret;
 	}
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/misc-mic-double-free-on-ioctl-error-path.patch queue-4.9/drivers-misc-c2port-c2port-duramar2150.c-checking-for-null-instead-of-is_err.patch queue-4.9/iio-adc-ti_am335x_adc-allocating-too-much-in-probe.patch queue-4.9/staging-rtl8188eu-prevent-an-underflow-in-rtw_check_beacon_data.patch