Messages in this thread Patch in this message | | | From | Kangjie Lu <> | Subject | [PATCH] infoleak fix1 in timer | Date | Tue, 3 May 2016 16:44:07 -0400 |
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The stack object “tread” 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@gatech.edu> --- sound/core/timer.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/sound/core/timer.c b/sound/core/timer.c index 6469bed..964f5eb 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -1739,6 +1739,7 @@ static int snd_timer_user_params(struct file *file, if (tu->timeri->flags & SNDRV_TIMER_IFLG_EARLY_EVENT) { if (tu->tread) { struct snd_timer_tread tread; + memset(&tread, 0, sizeof(tread)); tread.event = SNDRV_TIMER_EVENT_EARLY; tread.tstamp.tv_sec = 0; tread.tstamp.tv_nsec = 0; -- 1.9.1
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