Patch "Input: zforce - don't overwrite the stack" has been added to the 4.1-stable tree

Patch "Input: zforce - don't overwrite the stack" has been added to the 4.1-stable tree

[gregkh]

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

    Input: zforce - don't overwrite the stack

to the 4.1-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:
     input-zforce-don-t-overwrite-the-stack.patch
and it can be found in the queue-4.1 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 7d01cd261c76f95913c81554a751968a1d282d3a Mon Sep 17 00:00:00 2001
From: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>
Date: Mon, 13 Jul 2015 09:54:42 -0700
Subject: Input: zforce - don't overwrite the stack

From: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>

commit 7d01cd261c76f95913c81554a751968a1d282d3a upstream.

If we get a corrupted packet with PAYLOAD_LENGTH > FRAME_MAXSIZE, we
will silently overwrite the stack.

Signed-off-by: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/input/touchscreen/zforce_ts.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/input/touchscreen/zforce_ts.c
+++ b/drivers/input/touchscreen/zforce_ts.c
@@ -430,7 +430,7 @@ static int zforce_read_packet(struct zfo
 		goto unlock;
 	}
 
-	if (buf[PAYLOAD_LENGTH] == 0) {
+	if (buf[PAYLOAD_LENGTH] == 0 || buf[PAYLOAD_LENGTH] > FRAME_MAXSIZE) {
 		dev_err(&client->dev, "invalid payload length: %d\n",
 			buf[PAYLOAD_LENGTH]);
 		ret = -EIO;


Patches currently in stable-queue which might be from external.Oleksij.Rempel@de.bosch.com are

queue-4.1/input-zforce-don-t-overwrite-the-stack.patch