mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-07-08 20:31:57 +00:00
34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
From 014fa8def84c62893fa016e873c12de1da498603 Mon Sep 17 00:00:00 2001
|
|
From: raghavendra ambadas <rambad@codeaurora.org>
|
|
Date: Mon, 6 Oct 2014 14:59:57 +0530
|
|
Subject: msm: mdp: Validate input arguments from user space
|
|
|
|
Fully verify the input arguments from user client are safe
|
|
to use.
|
|
|
|
Change-Id: Ie14332443b187951009c63ebfb78456dcd9ba60f
|
|
Signed-off-by: Raghavendra Ambadas <rambad@codeaurora.org>
|
|
---
|
|
drivers/video/msm/mdp.c | 5 +++++
|
|
1 file changed, 5 insertions(+)
|
|
|
|
diff --git a/drivers/video/msm/mdp.c b/drivers/video/msm/mdp.c
|
|
index 4ede0b52..c00bd78 100644
|
|
--- a/drivers/video/msm/mdp.c
|
|
+++ b/drivers/video/msm/mdp.c
|
|
@@ -485,6 +485,11 @@ static int mdp_lut_hw_update(struct fb_cmap *cmap)
|
|
c[1] = cmap->blue;
|
|
c[2] = cmap->red;
|
|
|
|
+ if (cmap->start > MDP_HIST_LUT_SIZE || cmap->len > MDP_HIST_LUT_SIZE ||
|
|
+ (cmap->start + cmap->len > MDP_HIST_LUT_SIZE)) {
|
|
+ pr_err("mdp_lut_hw_update invalid arguments\n");
|
|
+ return -EINVAL;
|
|
+ }
|
|
for (i = 0; i < cmap->len; i++) {
|
|
if (copy_from_user(&r, cmap->red++, sizeof(r)) ||
|
|
copy_from_user(&g, cmap->green++, sizeof(g)) ||
|
|
--
|
|
cgit v1.1
|
|
|