Patch "staging: rtl8188eu: prevent an underflow in rtw_check_beacon_data()" 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

staging: rtl8188eu: prevent an underflow in rtw_check_beacon_data()

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:
staging-rtl8188eu-prevent-an-underflow-in-rtw_check_beacon_data.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: Sat, 22 Apr 2017 13:47:23 +0300
Subject: staging: rtl8188eu: prevent an underflow in rtw_check_beacon_data()

From: Dan Carpenter <[email protected]>

commit 784047eb2d3405a35087af70cba46170c5576b25 upstream.

The "len" could be as low as -14 so we should check for negatives.

---
 drivers/staging/rtl8188eu/core/rtw_ap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -890,7 +890,7 @@ int rtw_check_beacon_data(struct adapter
 		return _FAIL;
 
 
-	if (len > MAX_IE_SZ)
+	if (len < 0 || len > MAX_IE_SZ)
 		return _FAIL;
 
 	pbss_network->IELength = len;

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