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86 lines
3.7 KiB
Diff
86 lines
3.7 KiB
Diff
From 970d6933e53c1f7ca8c8b67f49147b18505c3b8f Mon Sep 17 00:00:00 2001
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From: Aravind Kumar <akumark@codeaurora.org>
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Date: Mon, 11 May 2015 18:19:11 +0530
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Subject: ASoC: msm8x16-wcd: prevent out of bounds access
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Hardcoding the third argument in strnstr function
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is resulting in out of bounds access. Set the third argument
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to sizeof the character string passed as the first argument
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to prevent out of bounds access.
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CRs-Fixed: 832915
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Change-Id: I61be88701340e271fd866e0e1801722dbe7d63ac
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Signed-off-by: Aravind Kumar <akumark@codeaurora.org>
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---
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sound/soc/codecs/msm8x16-wcd.c | 24 ++++++++++++------------
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1 file changed, 12 insertions(+), 12 deletions(-)
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diff --git a/sound/soc/codecs/msm8x16-wcd.c b/sound/soc/codecs/msm8x16-wcd.c
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index 296f7d3..9a193c67 100644
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--- a/sound/soc/codecs/msm8x16-wcd.c
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+++ b/sound/soc/codecs/msm8x16-wcd.c
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@@ -2603,19 +2603,19 @@ static int msm8x16_wcd_codec_enable_micbias(struct snd_soc_dapm_widget *w,
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micbias2 = (snd_soc_read(codec, MSM8X16_WCD_A_ANALOG_MICB_2_EN) & 0x80);
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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- if (strnstr(w->name, internal1_text, 30)) {
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+ if (strnstr(w->name, internal1_text, strlen(w->name))) {
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if (get_codec_version(msm8x16_wcd) == CAJON)
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snd_soc_update_bits(codec,
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MSM8X16_WCD_A_ANALOG_TX_1_2_ATEST_CTL_2,
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0x02, 0x02);
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snd_soc_update_bits(codec, micb_int_reg, 0x80, 0x80);
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- } else if (strnstr(w->name, internal2_text, 30)) {
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+ } else if (strnstr(w->name, internal2_text, strlen(w->name))) {
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snd_soc_update_bits(codec, micb_int_reg, 0x10, 0x10);
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snd_soc_update_bits(codec, w->reg, 0x60, 0x00);
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- } else if (strnstr(w->name, internal3_text, 30)) {
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+ } else if (strnstr(w->name, internal3_text, strlen(w->name))) {
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snd_soc_update_bits(codec, micb_int_reg, 0x2, 0x2);
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}
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- if (!strnstr(w->name, external_text, 30))
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+ if (!strnstr(w->name, external_text, strlen(w->name)))
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snd_soc_update_bits(codec,
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MSM8X16_WCD_A_ANALOG_MICB_1_EN, 0x05, 0x04);
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if (w->reg == MSM8X16_WCD_A_ANALOG_MICB_1_EN)
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@@ -2624,28 +2624,28 @@ static int msm8x16_wcd_codec_enable_micbias(struct snd_soc_dapm_widget *w,
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break;
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case SND_SOC_DAPM_POST_PMU:
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usleep_range(20000, 20100);
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- if (strnstr(w->name, internal1_text, 30)) {
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+ if (strnstr(w->name, internal1_text, strlen(w->name))) {
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snd_soc_update_bits(codec, micb_int_reg, 0x40, 0x40);
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- } else if (strnstr(w->name, internal2_text, 30)) {
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+ } else if (strnstr(w->name, internal2_text, strlen(w->name))) {
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snd_soc_update_bits(codec, micb_int_reg, 0x08, 0x08);
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msm8x16_notifier_call(codec,
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WCD_EVENT_PRE_MICBIAS_2_ON);
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- } else if (strnstr(w->name, internal3_text, 30)) {
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+ } else if (strnstr(w->name, internal3_text, strlen(w->name))) {
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snd_soc_update_bits(codec, micb_int_reg, 0x01, 0x01);
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- } else if (strnstr(w->name, external2_text, 30)) {
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+ } else if (strnstr(w->name, external2_text, strlen(w->name))) {
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msm8x16_notifier_call(codec,
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WCD_EVENT_PRE_MICBIAS_2_ON);
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}
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break;
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case SND_SOC_DAPM_POST_PMD:
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- if (strnstr(w->name, internal1_text, 30)) {
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+ if (strnstr(w->name, internal1_text, strlen(w->name))) {
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snd_soc_update_bits(codec, micb_int_reg, 0xC0, 0x40);
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- } else if (strnstr(w->name, internal2_text, 30)) {
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+ } else if (strnstr(w->name, internal2_text, strlen(w->name))) {
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msm8x16_notifier_call(codec,
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WCD_EVENT_PRE_MICBIAS_2_OFF);
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- } else if (strnstr(w->name, internal3_text, 30)) {
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+ } else if (strnstr(w->name, internal3_text, strlen(w->name))) {
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snd_soc_update_bits(codec, micb_int_reg, 0x2, 0x0);
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- } else if (strnstr(w->name, external2_text, 30)) {
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+ } else if (strnstr(w->name, external2_text, strlen(w->name))) {
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/*
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* send micbias turn off event to mbhc driver and then
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* break, as no need to set MICB_1_EN register.
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--
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cgit v1.1
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