mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
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61 lines
2.2 KiB
Diff
61 lines
2.2 KiB
Diff
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From a8cb976e7c8f25191728b655e0b38328a6d7d81f Mon Sep 17 00:00:00 2001
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From: Benjamin Chan <bkchan@codeaurora.org>
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Date: Wed, 19 Apr 2017 16:24:40 -0400
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Subject: msm: mdss: Add plane_count range check in mdss WFD
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For any given output buffer to the MDSS WFD, it is necessary to check
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the range of the plane_count against the MAX_PLANES definition, in order
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to avoid any out of bound access.
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CRs-Fixed: 2028702
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Change-Id: I4f1497a3a2e4ca2d30fc268e68cfdacc0d8539ea
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Signed-off-by: Benjamin Chan <bkchan@codeaurora.org>
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---
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drivers/video/fbdev/msm/mdss_mdp_layer.c | 6 ++++++
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drivers/video/fbdev/msm/mdss_mdp_wfd.c | 8 +++++++-
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2 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/drivers/video/fbdev/msm/mdss_mdp_layer.c b/drivers/video/fbdev/msm/mdss_mdp_layer.c
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index 09a3422..5e96a08 100644
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--- a/drivers/video/fbdev/msm/mdss_mdp_layer.c
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+++ b/drivers/video/fbdev/msm/mdss_mdp_layer.c
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@@ -3035,6 +3035,12 @@ int mdss_mdp_layer_pre_commit_wfd(struct msm_fb_data_type *mfd,
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wfd = mdp5_data->wfd;
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output_layer = commit->output_layer;
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+ if (output_layer->buffer.plane_count > MAX_PLANES) {
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+ pr_err("Output buffer plane_count exceeds MAX_PLANES limit:%d\n",
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+ output_layer->buffer.plane_count);
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+ return -EINVAL;
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+ }
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+
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data = mdss_mdp_wfd_add_data(wfd, output_layer);
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if (IS_ERR_OR_NULL(data))
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return PTR_ERR(data);
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diff --git a/drivers/video/fbdev/msm/mdss_mdp_wfd.c b/drivers/video/fbdev/msm/mdss_mdp_wfd.c
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index 71a07f6..7868dc0 100644
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--- a/drivers/video/fbdev/msm/mdss_mdp_wfd.c
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+++ b/drivers/video/fbdev/msm/mdss_mdp_wfd.c
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@@ -1,4 +1,4 @@
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-/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
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+/* Copyright (c) 2015-2017, 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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@@ -322,6 +322,12 @@ int mdss_mdp_wb_import_data(struct device *device,
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if (wfd_data->layer.flags & MDP_LAYER_SECURE_SESSION)
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flags = MDP_SECURE_OVERLAY_SESSION;
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+ if (buffer->plane_count > MAX_PLANES) {
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+ pr_err("buffer plane_count exceeds MAX_PLANES limit:%d",
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+ buffer->plane_count);
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+ return -EINVAL;
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+ }
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+
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memset(planes, 0, sizeof(planes));
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for (i = 0; i < buffer->plane_count; i++) {
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--
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cgit v1.1
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