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70 lines
2.4 KiB
Diff
70 lines
2.4 KiB
Diff
From a5f07894058c4198f61e533d727b343c5be879b0 Mon Sep 17 00:00:00 2001
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From: Rajesh Bondugula <rajeshb@codeaurora.org>
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Date: Tue, 15 Nov 2016 12:26:47 -0800
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Subject: msm: camera: sensor: Add boundary check for cci master
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Add boundary check for cci master in i2c_read.
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This value is passed from userpsace. If user sends an
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invalid number for master there is a possibility of
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accessing unintended buffer.
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This change addresses the issue.
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Crs-Fixed: 1086764
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Signed-off-by: Rajesh Bondugula <rajeshb@codeaurora.org>
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Change-Id: Ice3bde902aea96382ceb4dfddfd28a5ea89c183d
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---
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.../media/platform/msm/camera_v2/sensor/cci/msm_cci.c | 18 +++++++++++++-----
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1 file changed, 13 insertions(+), 5 deletions(-)
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diff --git a/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c b/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
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index b1c2382..2412ed2 100644
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--- a/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
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+++ b/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
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@@ -776,10 +776,18 @@ static int32_t msm_cci_i2c_read(struct v4l2_subdev *sd,
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enum cci_i2c_queue_t queue = QUEUE_1;
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struct cci_device *cci_dev = NULL;
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struct msm_camera_cci_i2c_read_cfg *read_cfg = NULL;
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+
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CDBG("%s line %d\n", __func__, __LINE__);
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cci_dev = v4l2_get_subdevdata(sd);
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master = c_ctrl->cci_info->cci_i2c_master;
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read_cfg = &c_ctrl->cfg.cci_i2c_read_cfg;
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+
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+ if (master >= MASTER_MAX || master < 0) {
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+ pr_err("%s:%d Invalid I2C master %d\n",
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+ __func__, __LINE__, master);
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+ return -EINVAL;
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+ }
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+
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mutex_lock(&cci_dev->cci_master_info[master].mutex_q[queue]);
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/* Set the I2C Frequency */
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@@ -1004,11 +1012,6 @@ static int32_t msm_cci_i2c_write(struct v4l2_subdev *sd,
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enum cci_i2c_master_t master;
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cci_dev = v4l2_get_subdevdata(sd);
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- if (c_ctrl->cci_info->cci_i2c_master >= MASTER_MAX
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- || c_ctrl->cci_info->cci_i2c_master < 0) {
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- pr_err("%s:%d Invalid I2C master addr\n", __func__, __LINE__);
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- return -EINVAL;
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- }
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if (cci_dev->cci_state != CCI_STATE_ENABLED) {
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pr_err("%s invalid cci state %d\n",
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__func__, cci_dev->cci_state);
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@@ -1539,6 +1542,11 @@ static int32_t msm_cci_write(struct v4l2_subdev *sd,
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return rc;
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}
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+ if (c_ctrl->cci_info->cci_i2c_master >= MASTER_MAX
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+ || c_ctrl->cci_info->cci_i2c_master < 0) {
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+ pr_err("%s:%d Invalid I2C master addr\n", __func__, __LINE__);
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+ return -EINVAL;
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+ }
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master = c_ctrl->cci_info->cci_i2c_master;
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cci_master_info = &cci_dev->cci_master_info[master];
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--
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cgit v1.1
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