linux-kernel - [PATCH 5.10 028/157] ASoC: qcom: sdm845: Fix array out of bounds access

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Date:   Mon, 22 Mar 2021 13:26:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, John Stultz <john.stultz@...aro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 5.10 028/157] ASoC: qcom: sdm845: Fix array out of bounds access

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

commit 1c668e1c0a0f74472469cd514f40c9012b324c31 upstream.

Static analysis Coverity had detected a potential array out-of-bounds
write issue due to the fact that MAX AFE port Id was set to 16 instead
of using AFE_PORT_MAX macro.

Fix this by properly using AFE_PORT_MAX macro.

Fixes: 1b93a8843147 ("ASoC: qcom: sdm845: handle soundwire stream")
Reported-by: John Stultz <john.stultz@...aro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Link: https://lore.kernel.org/r/20210309142129.14182-2-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/soc/qcom/sdm845.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/soc/qcom/sdm845.c
+++ b/sound/soc/qcom/sdm845.c
@@ -33,12 +33,12 @@
 struct sdm845_snd_data {
 	struct snd_soc_jack jack;
 	bool jack_setup;
-	bool stream_prepared[SLIM_MAX_RX_PORTS];
+	bool stream_prepared[AFE_PORT_MAX];
 	struct snd_soc_card *card;
 	uint32_t pri_mi2s_clk_count;
 	uint32_t sec_mi2s_clk_count;
 	uint32_t quat_tdm_clk_count;
-	struct sdw_stream_runtime *sruntime[SLIM_MAX_RX_PORTS];
+	struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
 };
 
 static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};