From 5a1f8c42259a424cfd262185da872764dcc673ad Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 15 Oct 2015 10:01:42 +0300 Subject: [PATCH] ALSA: oss: underflow in snd_mixer_oss_proc_write() We cap the upper bound of "idx" but not the negative side. Let's make it unsigned to fix this. Signed-off-by: Dan Carpenter Signed-off-by: Takashi Iwai --- sound/core/oss/mixer_oss.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index a99f7200ff3f..7a8c79dd9734 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -1177,7 +1177,8 @@ static void snd_mixer_oss_proc_write(struct snd_info_entry *entry, struct snd_mixer_oss *mixer = entry->private_data; char line[128], str[32], idxstr[16]; const char *cptr; - int ch, idx; + unsigned int idx; + int ch; struct snd_mixer_oss_assign_table *tbl; struct slot *slot; -- 2.20.1