CVE-2026-98997None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: only accept doorbell BOs as queue doorbell amdgpu_userq_get_doorbell_index() pins any BO passed as doorbell_handle into the doorbell domain. For a re…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/userq: only accept doorbell BOs as queue doorbell
amdgpu_userq_get_doorbell_index() pins any BO passed as doorbell_handle into the doorbell domain. For a regular BO, TTM moves it with ttm_bo_move_null() and its contents are lost. Since an importer on the same device gets the exporter's GEM object, a client can do this to a buffer another client shared with it.
Reject BOs that were not created in the doorbell domain.
v2: drop the error message, use a local abo variable (Christian)
(cherry picked from commit f7497bbc19db4821c62b9d97b31c9086feb2d917)
Linux >= f09c1e6077abd1bc2ddd2b97e1135215801ca7f9 < 112dbe2b10d6d088a6c599980dd960dcbfa55ff0Linux >= f09c1e6077abd1bc2ddd2b97e1135215801ca7f9 < 8640b3f961d743d6dc0458c2b53a3af434690cc1Linux >= f09c1e6077abd1bc2ddd2b97e1135215801ca7f9 < 7f7c88dbf4d543f6703e53bdeed380e886733167Linux 6.16Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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