commit: fefaedcfb82d2e57c2320acf60604ab03b750cc0
From: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Sun, 12 May 2013 22:00:51 -0700
Subject: drm/radeon: check incoming cliprects pointer
The "boxes" parameter points into userspace memory. It should be verified
like any other operation against user memory.
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
---
drivers/gpu/drm/radeon/r300_cmdbuf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/r300_cmdbuf.c b/drivers/gpu/drm/radeon/r300_cmdbuf.c
index 865e2c9..60170ea 100644
--- a/drivers/gpu/drm/radeon/r300_cmdbuf.c
+++ b/drivers/gpu/drm/radeon/r300_cmdbuf.c
@@ -75,7 +75,7 @@ static int r300_emit_cliprects(drm_radeon_private_t *dev_priv,
OUT_RING(CP_PACKET0(R300_RE_CLIPRECT_TL_0, nr * 2 - 1));
for (i = 0; i < nr; ++i) {
- if (DRM_COPY_FROM_USER_UNCHECKED
+ if (DRM_COPY_FROM_USER
(&box, &cmdbuf->boxes[n + i], sizeof(box))) {
DRM_ERROR("copy cliprect faulted\n");
return -EFAULT;
--
1.7.10.4
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