diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0499-fbmem-Ensure-that-parameters-are-properly-checked-wi.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0499-fbmem-Ensure-that-parameters-are-properly-checked-wi.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0499-fbmem-Ensure-that-parameters-are-properly-checked-wi.patch b/target/linux/brcm2708/patches-4.4/0499-fbmem-Ensure-that-parameters-are-properly-checked-wi.patch new file mode 100644 index 0000000000..186f29bef2 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0499-fbmem-Ensure-that-parameters-are-properly-checked-wi.patch @@ -0,0 +1,27 @@ +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) { |