diff options
| author | Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com> | 2021-07-24 19:18:24 +0800 |
|---|---|---|
| committer | Zack Rusin <zackr@vmware.com> | 2021-08-09 17:30:34 -0400 |
| commit | 2bc5da528dd570c5ecabc107e6fbdbc55974276f (patch) | |
| tree | 17db96c2cf7aab94f4d2a9c90ddf6a1e24d5b783 /drivers/gpu/drm/vmwgfx/vmwgfx_mob.c | |
| parent | 1cb48cf3b1da45e0bfb5046d2d43746dbdd6339e (diff) | |
drm/vmwgfx: fix potential UAF in vmwgfx_surface.c
drm_file.master should be protected by either drm_device.master_mutex
or drm_file.master_lookup_lock when being dereferenced. However,
drm_master_get is called on unprotected file_priv->master pointers in
vmw_surface_define_ioctl and vmw_gb_surface_define_internal.
This is fixed by replacing drm_master_get with drm_file_get_master.
Signed-off-by: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210724111824.59266-4-desmondcheongzx@gmail.com
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_mob.c')
0 files changed, 0 insertions, 0 deletions