From: Kees Cook Date: Mon, 13 May 2013 05:00:51 +0000 (-0700) Subject: drm/radeon: check incoming cliprects pointer X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fefaedcfb82d2e57c2320acf60604ab03b750cc0;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git 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 Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/radeon/r300_cmdbuf.c b/drivers/gpu/drm/radeon/r300_cmdbuf.c index 865e2c9980db..60170ea5e3a2 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;