Messages in this thread Patch in this message | | | From | Kangjie Lu <> | Subject | [PATCH] infoleak fix2 in timer | Date | Tue, 3 May 2016 16:44:20 -0400 |
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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.
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 964f5eb..e98fa5f 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -1225,6 +1225,7 @@ 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; -- 1.9.1
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