linux-kernel - [PATCH 02/16] ASoC: codecs: rx-macro: fix accessing array out of bounds for enum type

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Date:   Tue, 22 Feb 2022 11:59:19 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     broonie@...nel.org
Cc:     lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.com,
        pierre-louis.bossart@...ux.intel.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, quic_srivasam@...cinc.com,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 02/16] ASoC: codecs: rx-macro: fix accessing array out of bounds for enum type

Accessing enums using integer would result in array out of bounds access
on platforms like aarch64 where sizeof(long) is 8 compared to enum size
which is 4 bytes.

Fixes: 4f692926f562 ("ASoC: codecs: lpass-rx-macro: add dapm widgets and route")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 sound/soc/codecs/lpass-rx-macro.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c
index a7f86b094a4f..058d8634ce40 100644
--- a/sound/soc/codecs/lpass-rx-macro.c
+++ b/sound/soc/codecs/lpass-rx-macro.c
@@ -2273,7 +2273,7 @@ static int rx_macro_mux_get(struct snd_kcontrol *kcontrol,
 	struct snd_soc_component *component = snd_soc_dapm_to_component(widget->dapm);
 	struct rx_macro *rx = snd_soc_component_get_drvdata(component);
 
-	ucontrol->value.integer.value[0] =
+	ucontrol->value.enumerated.item[0] =
 			rx->rx_port_value[widget->shift];
 	return 0;
 }
@@ -2285,7 +2285,7 @@ static int rx_macro_mux_put(struct snd_kcontrol *kcontrol,
 	struct snd_soc_component *component = snd_soc_dapm_to_component(widget->dapm);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	struct snd_soc_dapm_update *update = NULL;
-	u32 rx_port_value = ucontrol->value.integer.value[0];
+	u32 rx_port_value = ucontrol->value.enumerated.item[0];
 	u32 aif_rst;
 	struct rx_macro *rx = snd_soc_component_get_drvdata(component);
 
@@ -2397,7 +2397,7 @@ static int rx_macro_get_hph_pwr_mode(struct snd_kcontrol *kcontrol,
 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 	struct rx_macro *rx = snd_soc_component_get_drvdata(component);
 
-	ucontrol->value.integer.value[0] = rx->hph_pwr_mode;
+	ucontrol->value.enumerated.item[0] = rx->hph_pwr_mode;
 	return 0;
 }
 
@@ -2407,7 +2407,7 @@ static int rx_macro_put_hph_pwr_mode(struct snd_kcontrol *kcontrol,
 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 	struct rx_macro *rx = snd_soc_component_get_drvdata(component);
 
-	rx->hph_pwr_mode = ucontrol->value.integer.value[0];
+	rx->hph_pwr_mode = ucontrol->value.enumerated.item[0];
 	return 0;
 }
 
-- 
2.21.0