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| author | Steve Cohen <cohens@codeaurora.org> | 2020-07-20 18:30:50 -0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2020-07-27 22:05:51 +0200 |
| commit | 8490d6a7e0a0a6fab5c2d82d57a3937306660864 (patch) | |
| tree | 4c48fca4801198cf553f3ec0438fb069a6516615 /Documentation/accounting | |
| parent | 900ab59e2621053b009f707f80b2c19ce0af5dee (diff) | |
drm: hold gem reference until object is no longer accessed
A use-after-free in drm_gem_open_ioctl can happen if the
GEM object handle is closed between the idr lookup and
retrieving the size from said object since a local reference
is not being held at that point. Hold the local reference
while the object can still be accessed to fix this and
plug the potential security hole.
Signed-off-by: Steve Cohen <cohens@codeaurora.org>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1595284250-31580-1-git-send-email-cohens@codeaurora.org
Diffstat (limited to 'Documentation/accounting')
0 files changed, 0 insertions, 0 deletions