renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-17 10:04:14 +08:00
Code

ASoC: ops: Reject out of bounds values in snd_soc_put_volsw()

Browse Source 
We don't currently validate that the values being set are within the range
we advertised to userspace as being valid, do so and reject any values
that are out of range.

Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220124153253.3548853-2-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mark Brown 2022-01-24 15:32:51 +00:00
parent 248be352bb
commit 817f7c9335
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
sound/soc/soc-ops.c
View File

@ -316,13 +316,27 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
if (sign_bit)
mask = BIT(sign_bit + 1) - 1;
val = ((ucontrol->value.integer.value[0] + min) & mask);
val = ucontrol->value.integer.value[0];
if (mc->platform_max && val > mc->platform_max)
return -EINVAL;
if (val > max - min)
return -EINVAL;
if (val < 0)
return -EINVAL;
val = (val + min) & mask;
if (invert)
val = max - val;
val_mask = mask << shift;
val = val << shift;
if (snd_soc_volsw_is_stereo(mc)) {
val2 = ((ucontrol->value.integer.value[1] + min) & mask);
val2 = ucontrol->value.integer.value[1];
if (mc->platform_max && val2 > mc->platform_max)
return -EINVAL;
if (val2 > max - min)
return -EINVAL;
if (val2 < 0)
return -EINVAL;
val2 = (val2 + min) & mask;
if (invert)
val2 = max - val2;
if (reg == reg2) {