{"id":"CVE-2026-98997","summary":"drm/amdgpu/userq: only accept doorbell BOs as queue doorbell","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/userq: only accept doorbell BOs as queue doorbell\n\namdgpu_userq_get_doorbell_index() pins any BO passed as doorbell_handle\ninto the doorbell domain. For a regular BO, TTM moves it with\nttm_bo_move_null() and its contents are lost. Since an importer on the\nsame device gets the exporter's GEM object, a client can do this to a\nbuffer another client shared with it.\n\nReject BOs that were not created in the doorbell domain.\n\nv2: drop the error message, use a local abo variable (Christian)\n\n(cherry picked from commit f7497bbc19db4821c62b9d97b31c9086feb2d917)","modified":"2026-10-25T02:47:28.719508646Z","published":"2026-10-23T12:20:16.267Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98997.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/112dbe2b10d6d088a6c599980dd960dcbfa55ff0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7f7c88dbf4d543f6703e53bdeed380e886733167"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8640b3f961d743d6dc0458c2b53a3af434690cc1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98997.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98997"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f09c1e6077abd1bc2ddd2b97e1135215801ca7f9"},{"fixed":"112dbe2b10d6d088a6c599980dd960dcbfa55ff0"},{"fixed":"8640b3f961d743d6dc0458c2b53a3af434690cc1"},{"fixed":"7f7c88dbf4d543f6703e53bdeed380e886733167"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-98997.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.18.57"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-98997.json"}}],"schema_version":"1.9.2"}