Patch "can: pcan_usb: fix wrong memcpy() bytes length" has been added to the 3.4-stable tree

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

    can: pcan_usb: fix wrong memcpy() bytes length

to the 3.4-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:
     can-pcan_usb-fix-wrong-memcpy-bytes-length.patch
and it can be found in the queue-3.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 3c322a56b01695df15c70bfdc2d02e0ccd80654e Mon Sep 17 00:00:00 2001
From: Stephane Grosjean <s.grosjean@xxxxxxxxxxxxxxx>
Date: Fri, 9 Aug 2013 11:44:06 +0200
Subject: can: pcan_usb: fix wrong memcpy() bytes length

From: Stephane Grosjean <s.grosjean@xxxxxxxxxxxxxxx>

commit 3c322a56b01695df15c70bfdc2d02e0ccd80654e upstream.

Fix possibly wrong memcpy() bytes length since some CAN records received from
PCAN-USB could define a DLC field in range [9..15].
In that case, the real DLC value MUST be used to move forward the record pointer
but, only 8 bytes max. MUST be copied into the data field of the struct
can_frame object of the skb given to the network core.

Signed-off-by: Stephane Grosjean <s.grosjean@xxxxxxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/net/can/usb/peak_usb/pcan_usb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/can/usb/peak_usb/pcan_usb.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb.c
@@ -649,7 +649,7 @@ static int pcan_usb_decode_data(struct p
 		if ((mc->ptr + rec_len) > mc->end)
 			goto decode_failed;
 
-		memcpy(cf->data, mc->ptr, rec_len);
+		memcpy(cf->data, mc->ptr, cf->can_dlc);
 		mc->ptr += rec_len;
 	}
 


Patches currently in stable-queue which might be from s.grosjean@xxxxxxxxxxxxxxx are

queue-3.4/can-pcan_usb-fix-wrong-memcpy-bytes-length.patch
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