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Commit 5ec4e77a authored by Kangjie Lu's avatar Kangjie Lu Committed by Dennis Cagle
Browse files

ALSA: timer: Fix leak in events via snd_timer_user_tinterrupt 



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.

b/28980217
Signed-off-by: default avatarKangjie Lu <kjlu@gatech.edu>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Change-Id: I53aa15632e941199010aae670cefb65c8fd56833
Git-commit: e4ec8cc8
Git-repo: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git


Signed-off-by: default avatarDennis Cagle <dcagle@codeaurora.org>
parent cb57e6b4

sound/core/timer.c

+1 −0
Original line number Diff line number Diff line
@@ -1352,6 +1352,7 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri, 
	}

	if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) &&

	    tu->last_resolution != resolution) {

		memset(&r1, 0, sizeof(r1));

		r1.event = SNDRV_TIMER_EVENT_RESOLUTION;

		r1.tstamp = tstamp;

		r1.val = resolution;