linux-kernel - [PATCH 5.15 320/913] ASoC: codecs: wc938x: fix accessing array out of bounds for enum type

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Message-Id: <20220405070349.442730334@linuxfoundation.org>
Date:   Tue,  5 Apr 2022 09:23:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 320/913] ASoC: codecs: wc938x: fix accessing array out of bounds for enum type

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

[ Upstream commit cc587b7c8fbbe128f6bd0dad025a0caea5e6d164 ]

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.

Fix this by using enumerated items instead of integers.

Fixes: e8ba1e05bdc0 ("ASoC: codecs: wcd938x: add basic controls")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Link: https://lore.kernel.org/r/20220222183212.11580-7-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/codecs/wcd938x.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c
index bbc261ab2025..54671bbf7471 100644
--- a/sound/soc/codecs/wcd938x.c
+++ b/sound/soc/codecs/wcd938x.c
@@ -2504,7 +2504,7 @@ static int wcd938x_tx_mode_get(struct snd_kcontrol *kcontrol,
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	int path = e->shift_l;
 
-	ucontrol->value.integer.value[0] = wcd938x->tx_mode[path];
+	ucontrol->value.enumerated.item[0] = wcd938x->tx_mode[path];
 
 	return 0;
 }
@@ -2528,7 +2528,7 @@ static int wcd938x_rx_hph_mode_get(struct snd_kcontrol *kcontrol,
 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 	struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component);
 
-	ucontrol->value.integer.value[0] = wcd938x->hph_mode;
+	ucontrol->value.enumerated.item[0] = wcd938x->hph_mode;
 
 	return 0;
 }
-- 
2.34.1