DivestOS/Patches/Linux_CVEs/CVE-2016-3854/ANY/0001.patch

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From cc96def76dfd18fba88575065b29f2ae9191fafa Mon Sep 17 00:00:00 2001
From: Terence Ho <terenceh@codeaurora.org>
Date: Thu, 5 Nov 2015 14:49:03 -0500
Subject: msm: camera: Add check to prevent array index out of bounds
Add check in msm_mctl_buf_return_buf to prevent array index
out-of-bounds.
Change-Id: Ie0bbbb1c97e8851ef004074726e90c78d5cdefa7
Signed-off-by: Terence Ho <terenceh@codeaurora.org>
---
drivers/media/video/msm/msm_mctl_buf.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/media/video/msm/msm_mctl_buf.c b/drivers/media/video/msm/msm_mctl_buf.c
index e258097..8b37391 100644
--- a/drivers/media/video/msm/msm_mctl_buf.c
+++ b/drivers/media/video/msm/msm_mctl_buf.c
@@ -917,6 +917,12 @@ int msm_mctl_buf_return_buf(struct msm_cam_media_controller *pmctl,
struct msm_cam_v4l2_device *pcam = pmctl->pcam_ptr;
unsigned long flags = 0;
+ if (image_mode < 0 || image_mode >= MSM_MAX_IMG_MODE) {
+ pr_err("%s: image_mode %d out-of-bounds",
+ __func__, image_mode);
+ return -EINVAL;
+ }
+
if (pcam->mctl_node.dev_inst_map[image_mode]) {
idx = pcam->mctl_node.dev_inst_map[image_mode]->my_index;
pcam_inst = pcam->mctl_node.dev_inst[idx];
--
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