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ALSA: timer: Fix leak in events via snd_timer_user_ccallback

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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
Git-commit: 9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6
Git-repo: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git
Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dennis Cagle <d-cagle@codeaurora.org>
(cherry picked from commit 9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6)
Change-Id: I12949efac2aba669d302908704005fb94ba7efd7
This commit is contained in:
Kangjie Lu
2017-01-28 22:48:04 -08:00
committed by Gerrit - the friendly Code Review server
parent 57fff6c61b
commit 0d582ec922
1 changed files with 1 additions and 0 deletions
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sound/core/timer.c
+1
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@@ -1184,6 +1184,7 @@ static void snd_timer_user_ccallback(struct snd_timer_instance *timeri,
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;