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55 lines
2.4 KiB
Diff
55 lines
2.4 KiB
Diff
From a939a87f0adf91feceb329a5c080b86e1ee333c7 Mon Sep 17 00:00:00 2001
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From: Samyukta Mogily <smogily@codeaurora.org>
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Date: Thu, 1 Sep 2016 18:16:50 +0530
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Subject: msm: sensor: Avoid potential stack overflow
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Add a check to validate the user input data is not
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greater than expected stack buffer size to avoid out
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of bounds array accesses
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CRs-Fixed: 1056307
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Change-Id: Ifd1f4e828373535fdf963aad22b217ae880c778c
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Signed-off-by: Samyukta Mogily <smogily@codeaurora.org>
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---
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drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_cci_i2c.c | 6 ++++++
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drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_qup_i2c.c | 6 ++++++
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2 files changed, 12 insertions(+)
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diff --git a/drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_cci_i2c.c b/drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_cci_i2c.c
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index 7315327..99d4b654 100644
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--- a/drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_cci_i2c.c
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+++ b/drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_cci_i2c.c
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@@ -272,6 +272,12 @@ int32_t msm_camera_cci_i2c_write_seq_table(
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client_addr_type = client->addr_type;
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client->addr_type = write_setting->addr_type;
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+ if (reg_setting->reg_data_size > I2C_SEQ_REG_DATA_MAX) {
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+ pr_err("%s: number of bytes %u exceeding the max supported %d\n",
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+ __func__, reg_setting->reg_data_size, I2C_SEQ_REG_DATA_MAX);
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+ return rc;
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+ }
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+
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for (i = 0; i < write_setting->size; i++) {
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rc = msm_camera_cci_i2c_write_seq(client, reg_setting->reg_addr,
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reg_setting->reg_data, reg_setting->reg_data_size);
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diff --git a/drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_qup_i2c.c b/drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_qup_i2c.c
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index f542ec2..eced0ce 100644
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--- a/drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_qup_i2c.c
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+++ b/drivers/media/platform/msm/camera_v2/sensor/io/msm_camera_qup_i2c.c
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@@ -290,6 +290,12 @@ int32_t msm_camera_qup_i2c_write_seq_table(struct msm_camera_i2c_client *client,
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client_addr_type = client->addr_type;
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client->addr_type = write_setting->addr_type;
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+ if (reg_setting->reg_data_size > I2C_SEQ_REG_DATA_MAX) {
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+ pr_err("%s: number of bytes %u exceeding the max supported %d\n",
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+ __func__, reg_setting->reg_data_size, I2C_SEQ_REG_DATA_MAX);
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+ return rc;
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+ }
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+
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for (i = 0; i < write_setting->size; i++) {
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rc = msm_camera_qup_i2c_write_seq(client, reg_setting->reg_addr,
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reg_setting->reg_data, reg_setting->reg_data_size);
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--
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cgit v1.1
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