{"id":"CVE-2026-63851","revision":"b42b2e11895d41fb82cc37d002ed5d99","records":[{"revision":"b42b2e11895d41fb82cc37d002ed5d99","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-63851","aliases":[],"title":"drm/amdgpu/vcn: set no_user_fence for VCN v4.0.5 enc ring","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v4.0.5 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 084d94ac93707bdda07efb5cee786f632de4219b)","state":0,"publishedAt":"2026-07-19T14:04:42.581+00:00","modifiedAt":"2026-10-19T20:07:51.377+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"547aad32edac17a3ec4989d8aad2426d0cbeb590\",\n                            \"lessThan\": \"75091030f07b7957cc0646cd52e2d9d15f611483\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"547aad32edac17a3ec4989d8aad2426d0cbeb590\",\n                            \"lessThan\": \"6d9a98c5ed65ba92a09e4ca5a5f6941448145529\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"547aad32edac17a3ec4989d8aad2426d0cbeb590\",\n                            \"lessThan\": \"7f23b5c420b9f68a210c29c5123bace670aa8cc9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"547aad32edac17a3ec4989d8aad2426d0cbeb590\",\n                            \"lessThan\": \"589a254bf3e88204c8402b9cbccd5e23a0af990f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.91\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.33\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.10\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/75091030f07b7957cc0646cd52e2d9d15f611483","https://git.kernel.org/stable/c/6d9a98c5ed65ba92a09e4ca5a5f6941448145529","https://git.kernel.org/stable/c/7f23b5c420b9f68a210c29c5123bace670aa8cc9","https://git.kernel.org/stable/c/589a254bf3e88204c8402b9cbccd5e23a0af990f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63851","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-63851","identifiers":["CVE-2026-63851"]},"retained":false,"historicalAffected":[]}],"coverage":[]}