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authorDave Airlie <airlied@redhat.com>2011-02-24 08:35:06 +1000
committerGreg Kroah-Hartman <gregkh@suse.de>2011-03-07 15:17:52 -0800
commit40d8d3eb87bccc1987a9e6e8ff1da03383d5155a (patch)
treecfb179569f90c04bdfb74649ffab212f314c4df2 /drivers/gpu
parent08020344c3d5632890a14218f2985c89d8d6c9b9 (diff)
drm: fix unsigned vs signed comparison issue in modeset ctl ioctl.
commit 1922756124ddd53846877416d92ba4a802bc658f upstream. This fixes CVE-2011-1013. Reported-by: Matthiew Herrb (OpenBSD X.org team) Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/gpu')
-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 332d743a9a8..c8b5a7baf30 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -540,7 +540,8 @@ 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)