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58 lines
2.3 KiB
Diff
58 lines
2.3 KiB
Diff
From b8874573428e8ce024f57c6242d662fcca5e5d55 Mon Sep 17 00:00:00 2001
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From: VijayaKumar T M <vtmuni@codeaurora.org>
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Date: Mon, 25 Jul 2016 11:53:19 +0530
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Subject: msm: camera: sensor: Fix use after free condition
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Add a check to return value before calling csid config which will
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otherwise lead to use after free scenario.
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CRs-Fixed: 1040857
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Change-Id: I4f4d9e38eeb537875e0d01de0e99913a44dd3f3f
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Signed-off-by: VijayaKumar T M <vtmuni@codeaurora.org>
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---
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drivers/media/platform/msm/camera_v2/sensor/csid/msm_csid.c | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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diff --git a/drivers/media/platform/msm/camera_v2/sensor/csid/msm_csid.c b/drivers/media/platform/msm/camera_v2/sensor/csid/msm_csid.c
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index 5864096..7dd2959 100644
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--- a/drivers/media/platform/msm/camera_v2/sensor/csid/msm_csid.c
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+++ b/drivers/media/platform/msm/camera_v2/sensor/csid/msm_csid.c
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@@ -1,4 +1,4 @@
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-/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
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+/* Copyright (c) 2011-2016, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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@@ -518,7 +518,7 @@ static int32_t msm_csid_cmd(struct csid_device *csid_dev, void __user *arg)
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break;
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}
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if (csid_params.lut_params.num_cid < 1 ||
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- csid_params.lut_params.num_cid > 16) {
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+ csid_params.lut_params.num_cid > MAX_CID) {
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pr_err("%s: %d num_cid outside range\n",
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__func__, __LINE__);
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rc = -EINVAL;
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@@ -547,6 +547,10 @@ static int32_t msm_csid_cmd(struct csid_device *csid_dev, void __user *arg)
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csid_params.lut_params.vc_cfg[i] = vc_cfg;
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}
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csid_dev->csid_sof_debug = 0;
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+ if (rc < 0) {
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+ pr_err("%s:%d failed\n", __func__, __LINE__);
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+ break;
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+ }
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rc = msm_csid_config(csid_dev, &csid_params);
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for (i--; i >= 0; i--)
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kfree(csid_params.lut_params.vc_cfg[i]);
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@@ -658,7 +662,7 @@ static int32_t msm_csid_cmd32(struct csid_device *csid_dev, void __user *arg)
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csid_params.lut_params.num_cid = lut_par32.num_cid;
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if (csid_params.lut_params.num_cid < 1 ||
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- csid_params.lut_params.num_cid > 16) {
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+ csid_params.lut_params.num_cid > MAX_CID) {
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pr_err("%s: %d num_cid outside range\n",
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__func__, __LINE__);
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rc = -EINVAL;
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--
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cgit v1.1
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