From: Mark Brown <broonie@xxxxxxxxxx> commit 4cf28e9ae6e2e11a044be1bcbcfa1b0d8675fe4d upstream. 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@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Link: https://lore.kernel.org/r/20220124153253.3548853-4-broonie@xxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- sound/soc/soc-ops.c | 2 ++ 1 file changed, 2 insertions(+) --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -915,6 +915,8 @@ int snd_soc_put_xr_sx(struct snd_kcontro unsigned int i, regval, regmask; int err; + if (val < mc->min || val > mc->max) + return -EINVAL; if (invert) val = max - val; val &= mask;
