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41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
From cf3c97b8b6165f13810e530068fbf94b07f1f77d Mon Sep 17 00:00:00 2001
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From: Ping Li <pingli@codeaurora.org>
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Date: Tue, 3 Jan 2017 11:48:06 -0800
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Subject: msm: mdss: Add sanity check for Gamut LUT size
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The Gamut LUT size passed from user space needs to go through
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a sanity check to avoid heap overflow. This patch adds the missing
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sanity check in the Gamut LUT config write path.
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Change-Id: I365938e06dbc6ca01961c9be01db10a5a9c863e4
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Signed-off-by: Ping Li <pingli@codeaurora.org>
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---
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drivers/video/fbdev/msm/mdss_mdp_pp.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/drivers/video/fbdev/msm/mdss_mdp_pp.c b/drivers/video/fbdev/msm/mdss_mdp_pp.c
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index 30dd3c8..951beae 100644
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--- a/drivers/video/fbdev/msm/mdss_mdp_pp.c
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+++ b/drivers/video/fbdev/msm/mdss_mdp_pp.c
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@@ -1,4 +1,4 @@
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-/* Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
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+/* Copyright (c) 2012-2017, 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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@@ -4827,6 +4827,11 @@ gamut_clk_off:
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goto gamut_set_dirty;
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}
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}
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+ if (pp_gm_has_invalid_lut_size(config)) {
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+ pr_debug("invalid lut size for gamut\n");
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+ ret = -EINVAL;
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+ goto gamut_config_exit;
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+ }
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local_cfg = *config;
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tbl_off = mdss_pp_res->gamut_tbl[disp_num];
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for (i = 0; i < MDP_GAMUT_TABLE_NUM; i++) {
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--
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cgit v1.1
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