From: Dan Carpenter Date: Fri, 13 Sep 2013 07:52:14 +0000 (+0300) Subject: ASoC: max98095: a couple array underflows X-Git-Tag: v3.0.100~21 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7abc25bd4142a45bbcd90281a1869850a922876;p=thirdparty%2Fkernel%2Fstable.git ASoC: max98095: a couple array underflows commit f8d7b13e14357ed19d2ca2799539600418dc3939 upstream. The ->put() function are called from snd_ctl_elem_write() with user supplied data. The limit checks here could underflow leading to a crash. Signed-off-by: Dan Carpenter Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- diff --git a/sound/soc/codecs/max98095.c b/sound/soc/codecs/max98095.c index e1d282d477da0..51bac5c133307 100644 --- a/sound/soc/codecs/max98095.c +++ b/sound/soc/codecs/max98095.c @@ -1865,7 +1865,7 @@ static int max98095_put_eq_enum(struct snd_kcontrol *kcontrol, struct max98095_pdata *pdata = max98095->pdata; int channel = max98095_get_eq_channel(kcontrol->id.name); struct max98095_cdata *cdata; - int sel = ucontrol->value.integer.value[0]; + unsigned int sel = ucontrol->value.integer.value[0]; struct max98095_eq_cfg *coef_set; int fs, best, best_val, i; int regmask, regsave; @@ -2011,7 +2011,7 @@ static int max98095_put_bq_enum(struct snd_kcontrol *kcontrol, struct max98095_pdata *pdata = max98095->pdata; int channel = max98095_get_bq_channel(kcontrol->id.name); struct max98095_cdata *cdata; - int sel = ucontrol->value.integer.value[0]; + unsigned int sel = ucontrol->value.integer.value[0]; struct max98095_biquad_cfg *coef_set; int fs, best, best_val, i; int regmask, regsave;