35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
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From b06a443b5679e9a0298e2f206ddb60845569f62f Mon Sep 17 00:00:00 2001
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From: Kangjie Lu <kangjielu@gmail.com>
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Date: Tue, 3 May 2016 16:44:32 -0400
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Subject: [PATCH 3/3] ALSA: timer: Fix leak in events via
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snd_timer_user_tinterrupt
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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The stack object “r1” has a total size of 32 bytes. Its field
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“event” and “val” both contain 4 bytes padding. These 8 bytes
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padding bytes are sent to user without being initialized.
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Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
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Signed-off-by: Takashi Iwai <tiwai@suse.de>
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---
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sound/core/timer.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/sound/core/timer.c b/sound/core/timer.c
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index e98fa5feb731..c69a27155433 100644
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--- a/sound/core/timer.c
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+++ b/sound/core/timer.c
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@@ -1268,6 +1268,7 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri,
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}
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if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) &&
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tu->last_resolution != resolution) {
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+ memset(&r1, 0, sizeof(r1));
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r1.event = SNDRV_TIMER_EVENT_RESOLUTION;
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r1.tstamp = tstamp;
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r1.val = resolution;
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--
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2.5.5
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