This is a note to let you know that I've just added the patch titled
ALSA: timer: Fix leak in events via snd_timer_user_ccallback
to the 4.6-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:
alsa-timer-fix-leak-in-events-via-snd_timer_user_ccallback.patch
and it can be found in the queue-4.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6 Mon Sep 17 00:00:00 2001
From: Kangjie Lu <kangjielu@xxxxxxxxx>
Date: Tue, 3 May 2016 16:44:20 -0400
Subject: ALSA: timer: Fix leak in events via snd_timer_user_ccallback
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From: Kangjie Lu <kangjielu@xxxxxxxxx>
commit 9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6 upstream.
The stack object “r1” has a total size of 32 bytes. Its field
“event” and “val” both contain 4 bytes padding. These 8 bytes
padding bytes are sent to user without being initialized.
Signed-off-by: Kangjie Lu <kjlu@xxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/core/timer.c | 1 +
1 file changed, 1 insertion(+)
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -1225,6 +1225,7 @@ static void snd_timer_user_ccallback(str
tu->tstamp = *tstamp;
if ((tu->filter & (1 << event)) == 0 || !tu->tread)
return;
+ memset(&r1, 0, sizeof(r1));
r1.event = event;
r1.tstamp = *tstamp;
r1.val = resolution;
Patches currently in stable-queue which might be from kangjielu@xxxxxxxxx are
queue-4.6/alsa-timer-fix-leak-in-events-via-snd_timer_user_ccallback.patch
queue-4.6/alsa-timer-fix-leak-in-sndrv_timer_ioctl_params.patch
queue-4.6/alsa-timer-fix-leak-in-events-via-snd_timer_user_tinterrupt.patch
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