This is a note to let you know that I've just added the patch titled
Bluetooth: Fix incorrect strncpy() in hidp_setup_hid()
to the 3.7-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-incorrect-strncpy-in-hidp_setup_hid.patch
and it can be found in the queue-3.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 0a9ab9bdb3e891762553f667066190c1d22ad62b Mon Sep 17 00:00:00 2001
From: Anderson Lizardo <[email protected]>
Date: Sun, 6 Jan 2013 18:28:53 -0400
Subject: Bluetooth: Fix incorrect strncpy() in hidp_setup_hid()
From: Anderson Lizardo <[email protected]>
commit 0a9ab9bdb3e891762553f667066190c1d22ad62b upstream.
The length parameter should be sizeof(req->name) - 1 because there is no
guarantee that string provided by userspace will contain the trailing
'\0'.
Can be easily reproduced by manually setting req->name to 128 non-zero
bytes prior to ioctl(HIDPCONNADD) and checking the device name setup on
input subsystem:
$ cat /sys/devices/pnp0/00\:04/tty/ttyS0/hci0/hci0\:1/input8/name
AAAAAA[...]AAAAAAAAf0:af:f0:af:f0:af
("f0:af:f0:af:f0:af" is the device bluetooth address, taken from "phys"
field in struct hid_device due to overflow.)
Signed-off-by: Anderson Lizardo <[email protected]>
Acked-by: Marcel Holtmann <[email protected]>
Signed-off-by: Gustavo Padovan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
net/bluetooth/hidp/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -931,7 +931,7 @@ static int hidp_setup_hid(struct hidp_se
hid->version = req->version;
hid->country = req->country;
- strncpy(hid->name, req->name, 128);
+ strncpy(hid->name, req->name, sizeof(req->name) - 1);
strncpy(hid->phys, batostr(&bt_sk(session->ctrl_sock->sk)->src), 64);
strncpy(hid->uniq, batostr(&bt_sk(session->ctrl_sock->sk)->dst), 64);
Patches currently in stable-queue which might be from
[email protected] are
queue-3.7/bluetooth-fix-incorrect-strncpy-in-hidp_setup_hid.patch
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