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ASoC: ops: Reject out of bounds values in snd_soc_put_volsw_sx()
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/20220124153253.3548853-3-broonie@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
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1 changed files with 8 additions and 1 deletions
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@ -423,8 +423,15 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
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int err = 0;
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unsigned int val, val_mask;
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val = ucontrol->value.integer.value[0];
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if (mc->platform_max && val > mc->platform_max)
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return -EINVAL;
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if (val > max - min)
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return -EINVAL;
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if (val < 0)
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return -EINVAL;
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val_mask = mask << shift;
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val = (ucontrol->value.integer.value[0] + min) & mask;
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val = (val + min) & mask;
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val = val << shift;
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err = snd_soc_component_update_bits(component, reg, val_mask, val);
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