Messages in this thread | | | From | Chia-I Wu <> | Date | Fri, 16 Dec 2022 15:50:22 -0800 | Subject | Re: [PATCH] drm/virtio: Fix GEM handle creation UAF |
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On Fri, Dec 16, 2022 at 3:33 PM Rob Clark <robdclark@gmail.com> wrote: > > From: Rob Clark <robdclark@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@chromium.org> Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
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