{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-46311: drm/amdgpu/userq: fix access to stale wptr mapping","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-46311","status":"final","version":"1","initial_release_date":"2026-06-08T15:50:41.866Z","current_release_date":"2026-06-14T04:30:09.270Z","revision_history":[{"date":"2026-06-08T15:50:41.866Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/userq: fix access to stale wptr mapping\n\nUse drm_exec to take both locks i.e vm root bo and\nwptr_obj bo to access the mapping data properly.\n\nThis fixes the security issue of unmap the wptr_obj while\na queue creation is in progress and passing other\nbo at same address.\n\n(cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-46311 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-46311"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-46311"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/336a9186f3a4b65bbd865d93936605ac8a1a3991"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/6da7b1242da4455b11c24ce667d1cab1a348c8ea"}]},"product_tree":{"branches":[{"category":"vendor","name":"Linux","branches":[{"category":"product_name","name":"Linux","branches":[{"category":"product_version_range","name":">=5fb2f7fc21a3668e5794cc0d153641b9719713e1 <336a9186f3a4b65bbd865d93936605ac8a1a3991","product":{"name":"Linux Linux >=5fb2f7fc21a3668e5794cc0d153641b9719713e1 <336a9186f3a4b65bbd865d93936605ac8a1a3991","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=5fb2f7fc21a3668e5794cc0d153641b9719713e1 <6da7b1242da4455b11c24ce667d1cab1a348c8ea","product":{"name":"Linux Linux >=5fb2f7fc21a3668e5794cc0d153641b9719713e1 <6da7b1242da4455b11c24ce667d1cab1a348c8ea","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Linux","branches":[{"category":"product_name","name":"Linux","branches":[{"category":"product_version","name":"6.16","product":{"name":"Linux Linux 6.16","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.16:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"0","product":{"name":"Linux Linux 0","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.16:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.0.9","product":{"name":"Linux Linux 7.0.9","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.16:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.1-rc3","product":{"name":"Linux Linux 7.1-rc3","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.16:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-46311","title":"drm/amdgpu/userq: fix access to stale wptr mapping","notes":[{"category":"description","text":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/userq: fix access to stale wptr mapping\n\nUse drm_exec to take both locks i.e vm root bo and\nwptr_obj bo to access the mapping data properly.\n\nThis fixes the security issue of unmap the wptr_obj while\na queue creation is in progress and passing other\nbo at same address.\n\n(cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3"],"fixed":["CSAFPID-4","CSAFPID-5","CSAFPID-6"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 0, 336a9186f3a4b65bbd865d93936605ac8a1a3991, 6da7b1242da4455b11c24ce667d1cab1a348c8ea, 7.0.9, 7.1-rc3.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}]}]}