{"api_version":"1","generated_at":"2026-07-23T19:18:45+00:00","cve":"CVE-2026-63854","urls":{"html":"https://cve.report/CVE-2026-63854","api":"https://cve.report/api/cve/CVE-2026-63854.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63854","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63854"},"summary":{"title":"drm/amdgpu/vcn: set no_user_fence for VCN v3.0 enc/dec rings","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v3.0 enc/dec rings\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 663bed3c7b8b9a7624b0d95d300ddae034ad0614)","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 15:16:52","updated_at":"2026-07-20 15:16:51"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"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"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"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"}}],"references":[{"url":"https://git.kernel.org/stable/c/26c4f38529ac78930c9c4713e16ebc5b689bb0a3","name":"https://git.kernel.org/stable/c/26c4f38529ac78930c9c4713e16ebc5b689bb0a3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f1e5a6660d7cbf006079126d9babbf0ccf538c6b","name":"https://git.kernel.org/stable/c/f1e5a6660d7cbf006079126d9babbf0ccf538c6b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b076e45e6f757a2829e80d0144c1b5f201bee5af","name":"https://git.kernel.org/stable/c/b076e45e6f757a2829e80d0144c1b5f201bee5af","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2d6525e7b2504f5bbfe9417cddc1e8da858791dd","name":"https://git.kernel.org/stable/c/2d6525e7b2504f5bbfe9417cddc1e8da858791dd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e74fc9c72c1ba78d0de0b849f5929c3b39a8e20c","name":"https://git.kernel.org/stable/c/e74fc9c72c1ba78d0de0b849f5929c3b39a8e20c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63854","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63854","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf14826cdfb5c9fe10f98210d040b9d7486c381d e74fc9c72c1ba78d0de0b849f5929c3b39a8e20c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf14826cdfb5c9fe10f98210d040b9d7486c381d 26c4f38529ac78930c9c4713e16ebc5b689bb0a3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf14826cdfb5c9fe10f98210d040b9d7486c381d 2d6525e7b2504f5bbfe9417cddc1e8da858791dd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf14826cdfb5c9fe10f98210d040b9d7486c381d b076e45e6f757a2829e80d0144c1b5f201bee5af git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf14826cdfb5c9fe10f98210d040b9d7486c381d f1e5a6660d7cbf006079126d9babbf0ccf538c6b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.141 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.91 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.33 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.10 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"63854","cve":"CVE-2026-63854","epss":"0.001570000","percentile":"0.052650000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e74fc9c72c1ba78d0de0b849f5929c3b39a8e20c","status":"affected","version":"cf14826cdfb5c9fe10f98210d040b9d7486c381d","versionType":"git"},{"lessThan":"26c4f38529ac78930c9c4713e16ebc5b689bb0a3","status":"affected","version":"cf14826cdfb5c9fe10f98210d040b9d7486c381d","versionType":"git"},{"lessThan":"2d6525e7b2504f5bbfe9417cddc1e8da858791dd","status":"affected","version":"cf14826cdfb5c9fe10f98210d040b9d7486c381d","versionType":"git"},{"lessThan":"b076e45e6f757a2829e80d0144c1b5f201bee5af","status":"affected","version":"cf14826cdfb5c9fe10f98210d040b9d7486c381d","versionType":"git"},{"lessThan":"f1e5a6660d7cbf006079126d9babbf0ccf538c6b","status":"affected","version":"cf14826cdfb5c9fe10f98210d040b9d7486c381d","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.9"},{"lessThan":"5.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v3.0 enc/dec rings\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 663bed3c7b8b9a7624b0d95d300ddae034ad0614)"}],"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":"2026-07-20T13:40:51.515Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e74fc9c72c1ba78d0de0b849f5929c3b39a8e20c"},{"url":"https://git.kernel.org/stable/c/26c4f38529ac78930c9c4713e16ebc5b689bb0a3"},{"url":"https://git.kernel.org/stable/c/2d6525e7b2504f5bbfe9417cddc1e8da858791dd"},{"url":"https://git.kernel.org/stable/c/b076e45e6f757a2829e80d0144c1b5f201bee5af"},{"url":"https://git.kernel.org/stable/c/f1e5a6660d7cbf006079126d9babbf0ccf538c6b"}],"title":"drm/amdgpu/vcn: set no_user_fence for VCN v3.0 enc/dec rings","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63854","datePublished":"2026-07-19T14:04:44.487Z","dateReserved":"2026-07-19T07:54:57.016Z","dateUpdated":"2026-07-20T13:40:51.515Z","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":"63854","Ordinal":"1","Title":"drm/amdgpu/vcn: set no_user_fence for VCN v3.0 enc/dec rings","CVE":"CVE-2026-63854","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63854","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v3.0 enc/dec rings\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 663bed3c7b8b9a7624b0d95d300ddae034ad0614)","Type":"Description","Title":"drm/amdgpu/vcn: set no_user_fence for VCN v3.0 enc/dec rings"}]}}}