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ALSA: oss: underflow in snd_mixer_oss_proc_write()
author
Dan Carpenter
<dan.carpenter@oracle.com>
Thu, 15 Oct 2015 07:01:42 +0000
(10:01 +0300)
committer
Takashi Iwai
<tiwai@suse.de>
Thu, 15 Oct 2015 08:00:29 +0000
(10:00 +0200)
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 <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/oss/mixer_oss.c
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diff --git
a/sound/core/oss/mixer_oss.c
b/sound/core/oss/mixer_oss.c
index
a99f720
..
7a8c79d
100644
(file)
--- 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;