This is a note to let you know that I've just added the patch titled
Bluetooth: Fix invalid length check in l2cap_information_rsp()
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:
bluetooth-fix-invalid-length-check-in-l2cap_information_rsp.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 3f6fa3d489e127ca5a5b298eabac3ff5dbe0e112 Mon Sep 17 00:00:00 2001
From: Jaganath Kanakkassery <jaganath.k@xxxxxxxxxxx>
Date: Fri, 21 Jun 2013 19:55:11 +0530
Subject: Bluetooth: Fix invalid length check in l2cap_information_rsp()
From: Jaganath Kanakkassery <jaganath.k@xxxxxxxxxxx>
commit 3f6fa3d489e127ca5a5b298eabac3ff5dbe0e112 upstream.
The length check is invalid since the length varies with type of
info response.
This was introduced by the commit cb3b3152b2f5939d67005cff841a1ca748b19888
Because of this, l2cap info rsp is not handled and command reject is sent.
> ACL data: handle 11 flags 0x02 dlen 16
L2CAP(s): Info rsp: type 2 result 0
Extended feature mask 0x00b8
Enhanced Retransmission mode
Streaming mode
FCS Option
Fixed Channels
< ACL data: handle 11 flags 0x00 dlen 10
L2CAP(s): Command rej: reason 0
Command not understood
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jaganath Kanakkassery <jaganath.k@xxxxxxxxxxx>
Signed-off-by: Chan-Yeol Park <chanyeol.park@xxxxxxxxxxx>
Acked-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
Cc: Jianguo Wu <wujianguo@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/bluetooth/l2cap_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3445,7 +3445,7 @@ static inline int l2cap_move_channel_con
struct l2cap_move_chan_cfm_rsp *rsp = data;
u16 icid;
- if (cmd_len != sizeof(*rsp))
+ if (cmd_len < sizeof(*rsp))
return -EPROTO;
icid = le16_to_cpu(rsp->icid);
Patches currently in stable-queue which might be from jaganath.k@xxxxxxxxxxx are
queue-3.4/bluetooth-fix-invalid-length-check-in-l2cap_information_rsp.patch
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