Patch "ALSA: timer: Fix leak in events via snd_timer_user_ccallback" has been added to the 4.4-stable tree

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 4.4-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:
alsa-timer-fix-leak-in-events-via-snd_timer_user_ccallback.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Kangjie Lu <[email protected]>
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 <[email protected]>

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.

---
 sound/core/timer.c |    1 +
 1 file changed, 1 insertion(+)

@@ -1247,6 +1247,7 @@ 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 [email protected] are

queue-4.4/alsa-timer-fix-leak-in-events-via-snd_timer_user_ccallback.patch queue-4.4/alsa-timer-fix-leak-in-sndrv_timer_ioctl_params.patch queue-4.4/alsa-timer-fix-leak-in-events-via-snd_timer_user_tinterrupt.patch