[PATCH v1 3/3] ASoC: ops: Reject out of bounds values in snd_soc_put_xr_sx()

[Mark Brown <broonie@kernel.org>]

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
---
 sound/soc/soc-ops.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index c31e63b27193..dc0e7c8d31f3 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -879,6 +879,8 @@ int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
 	long val = ucontrol->value.integer.value[0];
 	unsigned int i;
 
+	if (val < mc->min || val > mc->max)
+		return -EINVAL;
 	if (invert)
 		val = max - val;
 	val &= mask;
-- 
2.30.2