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authorDan Carpenter <dan.carpenter@oracle.com>2013-09-13 10:52:49 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-13 16:08:31 -0700
commit7fe5daa3a267dc44677e471c3de88b8653aae541 (patch)
treef8b46a531684d0995e75a00969389d8d4daf3328 /sound
parent9cea6e1ab0be55708d4aacf62dd69f99c700b9ab (diff)
downloadvexpress-lsk-7fe5daa3a267dc44677e471c3de88b8653aae541.tar.gz
ASoC: 88pm860x: array overflow in snd_soc_put_volsw_2r_st()
commit d967967e8d1116fb38bad25e58714b5dddd03cca upstream. This is called from snd_ctl_elem_write() with user supplied data so we need to add some bounds checking. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/88pm860x-codec.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/codecs/88pm860x-codec.c b/sound/soc/codecs/88pm860x-codec.c
index 60159c07448..6fd174be3bd 100644
--- a/sound/soc/codecs/88pm860x-codec.c
+++ b/sound/soc/codecs/88pm860x-codec.c
@@ -351,6 +351,9 @@ static int snd_soc_put_volsw_2r_st(struct snd_kcontrol *kcontrol,
val = ucontrol->value.integer.value[0];
val2 = ucontrol->value.integer.value[1];
+ if (val >= ARRAY_SIZE(st_table) || val2 >= ARRAY_SIZE(st_table))
+ return -EINVAL;
+
err = snd_soc_update_bits(codec, reg, 0x3f, st_table[val].m);
if (err < 0)
return err;