[PATCH] drm/virtio: Fix GEM handle creation UAF

[Dmitry Osipenko]

On 12/17/22 02:33, Rob Clark wrote:
> From: Rob Clark <robdclark at chromium.org>
> 
> Userspace can guess the handle value and try to race GEM object creation
> with handle close, resulting in a use-after-free if we dereference the
> object after dropping the handle's reference.  For that reason, dropping
> the handle's reference must be done *after* we are done dereferencing
> the object.
> 
> Signed-off-by: Rob Clark <robdclark at chromium.org>
> ---
>  drivers/gpu/drm/virtio/virtgpu_ioctl.c | 19 +++++++++++++++++--
>  1 file changed, 17 insertions(+), 2 deletions(-)

Added fixes/stable tags and applied this virtio-gpu patch to misc-fixes.
The Panfrost patch is untouched.

-- 
Best regards,
Dmitry