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ASoC: 88pm860x: array overflow in snd_soc_put_volsw_2r_st()

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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>
Cc: stable@vger.kernel.org
This commit is contained in:
Dan Carpenter 2013-09-13 10:52:49 +03:00 committed by Mark Brown
parent 5df498a27a
commit d967967e8d
1 changed files with 3 additions and 0 deletions
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3
sound/soc/codecs/88pm860x-codec.c
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@ -349,6 +349,9 @@ 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;