Takashi Iwai 60adcfde92 ALSA: seq: Fix racy access for queue timer in proc read
snd_seq_info_timer_read() reads the information of the timer assigned
for each queue, but it's done in a racy way which may lead to UAF as
spotted by syzkaller.

This patch applies the missing q->timer_mutex lock while accessing the
timer object as well as a slight code change to adapt the standard
coding style.

Reported-by: syzbot+2b2ef983f973e5c40943@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200115203733.26530-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-15 21:38:18 +01:00
..
2019-11-07 13:52:17 +01:00
2019-07-08 14:45:34 +02:00
2019-11-20 19:39:54 +01:00
2019-10-07 03:53:03 +02:00