mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 07:22:33 +00:00
28 lines
1013 B
Diff
28 lines
1013 B
Diff
|
From 7c8c6f113e1169690dbfbfc486360d10452e5a85 Mon Sep 17 00:00:00 2001
|
||
|
|
From: popcornmix <popcornmix@gmail.com>
|
||
|
|
Date: Wed, 7 Sep 2016 16:57:59 +0100
|
||
|
|
Subject: [PATCH] fbmem: Ensure that parameters are properly checked within
|
||
|
|
fb_copyarea_user
|
||
|
|
|
||
|
|
---
|
||
|
|
drivers/video/fbdev/core/fbmem.c | 8 +++++++-
|
||
|
|
1 file changed, 7 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
--- a/drivers/video/fbdev/core/fbmem.c
|
||
|
|
+++ b/drivers/video/fbdev/core/fbmem.c
|
||
|
|
@@ -1090,7 +1090,13 @@ static int fb_copyarea_user(struct fb_in
|
||
|
|
int ret = 0;
|
||
|
|
if (!lock_fb_info(info))
|
||
|
|
return -ENODEV;
|
||
|
|
- if (copy->dx + copy->width > info->var.xres ||
|
||
|
|
+ if (copy->dx >= info->var.xres ||
|
||
|
|
+ copy->sx >= info->var.xres ||
|
||
|
|
+ copy->width > info->var.xres ||
|
||
|
|
+ copy->dy >= info->var.yres ||
|
||
|
|
+ copy->sy >= info->var.yres ||
|
||
|
|
+ copy->height > info->var.yres ||
|
||
|
|
+ copy->dx + copy->width > info->var.xres ||
|
||
|
|
copy->sx + copy->width > info->var.xres ||
|
||
|
|
copy->dy + copy->height > info->var.yres ||
|
||
|
|
copy->sy + copy->height > info->var.yres) {
|