Description (CNA)
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)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f09c1e6077abd1bc2ddd2b97e1135215801ca7f9 before 112dbe2b10d6d088a6c599980dd960dcbfa55ff0; affected f09c1e6077abd1bc2ddd2b97e1135215801ca7f9 before 8640b3f961d743d6dc0458c2b53a3af434690cc1; affected f09c1e6077abd1bc2ddd2b97e1135215801ca7f9 before 7f7c88dbf4d543f6703e53bdeed380e886733167 |
| Linux / Linux | affected 6.16; unaffected 0 before 6.16; unaffected 6.18.57 through 6.18.*; unaffected 7.2.11 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.