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authorDave Airlie <airlied@redhat.com>2011-02-24 08:35:06 +1000
committerDave Airlie <airlied@redhat.com>2011-02-28 15:24:35 +1000
commit1922756124ddd53846877416d92ba4a802bc658f (patch)
tree22b5b5e5457d5eab364cd2c860814b29874e56f7 /drivers/gpu/drm
parent3c0556e9673f79e386b27768e27d18b3ce29e40e (diff)
downloadlinux-2.6.38-lt-ux500-1922756124ddd53846877416d92ba4a802bc658f.tar.gz
drm: fix unsigned vs signed comparison issue in modeset ctl ioctl.
This fixes CVE-2011-1013. Reported-by: Matthiew Herrb (OpenBSD X.org team) Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/drm_irq.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 53120a72a48..28d1d3c24d6 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -1012,7 +1012,8 @@ int drm_modeset_ctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_modeset_ctl *modeset = data;
- int crtc, ret = 0;
+ int ret = 0;
+ unsigned int crtc;
/* If drm_vblank_init() hasn't been called yet, just no-op */
if (!dev->num_crtcs)