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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2013-09-13 10:52:49 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-09-13 18:36:39 +0100 |
| commit | d967967e8d1116fb38bad25e58714b5dddd03cca (patch) | |
| tree | 98add03945c8971fa345073a3bcd6f2ae6da497c /sound | |
| parent | 5df498a27ab385294fdb7cad19c623d4da94a780 (diff) | |
| download | lwn-d967967e8d1116fb38bad25e58714b5dddd03cca.tar.gz lwn-d967967e8d1116fb38bad25e58714b5dddd03cca.zip | |
ASoC: 88pm860x: array overflow in snd_soc_put_volsw_2r_st()
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
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/88pm860x-codec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/codecs/88pm860x-codec.c b/sound/soc/codecs/88pm860x-codec.c index 8af04343cc1a..259d1ac4492f 100644 --- a/sound/soc/codecs/88pm860x-codec.c +++ b/sound/soc/codecs/88pm860x-codec.c @@ -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; |