{"api_version":"1","generated_at":"2026-07-25T00:17:34+00:00","cve":"CVE-2026-63853","urls":{"html":"https://cve.report/CVE-2026-63853","api":"https://cve.report/api/cve/CVE-2026-63853.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63853","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63853"},"summary":{"title":"drm/amdgpu/vcn: set no_user_fence for VCN v4.0 enc ring","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v4.0 enc ring\n\nVCN encoder and decoder rings do not support 64-bit user fence writes,\nreject CS submissions with user fences.\n\n(cherry picked from commit fd852c048b46f9825e904a4f3f4538fe9d8827d9)","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 15:16:52","updated_at":"2026-07-20 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the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v4.0 enc ring\n\nVCN encoder and decoder rings do not support 64-bit user fence writes,\nreject CS submissions with user fences.\n\n(cherry picked from commit fd852c048b46f9825e904a4f3f4538fe9d8827d9)"}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-20T13:40:50.539Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1286b6872de0aee1feeeaa6dbac86369806de9a5"},{"url":"https://git.kernel.org/stable/c/6bdd2ed6458d35c368fbe9550a4d7f342abd3a92"},{"url":"https://git.kernel.org/stable/c/51f694221047c84fa185be98210eb2c354ffb8c6"}],"title":"drm/amdgpu/vcn: set no_user_fence for VCN v4.0 enc ring","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63853","datePublished":"2026-07-19T14:04:43.885Z","dateReserved":"2026-07-19T07:54:57.016Z","dateUpdated":"2026-07-20T13:40:50.539Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 15:16:52","lastModifiedDate":"2026-07-20 15:16:51","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63853","Ordinal":"1","Title":"drm/amdgpu/vcn: set no_user_fence for VCN v4.0 enc ring","CVE":"CVE-2026-63853","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63853","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v4.0 enc ring\n\nVCN encoder and decoder rings do not support 64-bit user fence writes,\nreject CS submissions with user fences.\n\n(cherry picked from commit fd852c048b46f9825e904a4f3f4538fe9d8827d9)","Type":"Description","Title":"drm/amdgpu/vcn: set no_user_fence for VCN v4.0 enc ring"}]}}}