This is a note to let you know that I've just added the patch titled
HID: picolcd: sanity check report size in raw_event() callback
to the 3.16-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:
hid-picolcd-sanity-check-report-size-in-raw_event-callback.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 844817e47eef14141cf59b8d5ac08dd11c0a9189 Mon Sep 17 00:00:00 2001
From: Jiri Kosina <jkosina@xxxxxxx>
Date: Wed, 27 Aug 2014 09:13:15 +0200
Subject: HID: picolcd: sanity check report size in raw_event() callback
From: Jiri Kosina <jkosina@xxxxxxx>
commit 844817e47eef14141cf59b8d5ac08dd11c0a9189 upstream.
The report passed to us from transport driver could potentially be
arbitrarily large, therefore we better sanity-check it so that raw_data
that we hold in picolcd_pending structure are always kept within proper
bounds.
Reported-by: Steven Vittitoe <scvitti@xxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hid/hid-picolcd_core.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/hid/hid-picolcd_core.c
+++ b/drivers/hid/hid-picolcd_core.c
@@ -350,6 +350,12 @@ static int picolcd_raw_event(struct hid_
if (!data)
return 1;
+ if (size > 64) {
+ hid_warn(hdev, "invalid size value (%d) for picolcd raw event\n",
+ size);
+ return 0;
+ }
+
if (report->id == REPORT_KEY_STATE) {
if (data->input_keys)
ret = picolcd_raw_keypad(data, report, raw_data+1, size-1);
Patches currently in stable-queue which might be from jkosina@xxxxxxx are
queue-3.16/hid-logitech-dj-prevent-false-errors-to-be-shown.patch
queue-3.16/hid-magicmouse-sanity-check-report-size-in-raw_event-callback.patch
queue-3.16/drm-i915-read-head-register-back-in-init_ring_common-to-enforce-ordering.patch
queue-3.16/hid-picolcd-sanity-check-report-size-in-raw_event-callback.patch
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