ALSA: ak4xx-adda: info leak in ak4xxx_capture_source_info()

"idx" is controled by the user and can be a negative offset into the
input_names[] array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/sound/i2c/other/ak4xxx-adda.c b/sound/i2c/other/ak4xxx-adda.c
index cef813d23641..ed726d1569e8 100644
--- a/sound/i2c/other/ak4xxx-adda.c
+++ b/sound/i2c/other/ak4xxx-adda.c
@@ -571,7 +571,7 @@ static int ak4xxx_capture_source_info(struct snd_kcontrol *kcontrol,
         struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
         int mixer_ch = AK_GET_SHIFT(kcontrol->private_value);
         const char **input_names;
-        int  num_names, idx;
+        unsigned int num_names, idx;
 
         num_names = ak4xxx_capture_num_inputs(ak, mixer_ch);
         if (!num_names)