{"id":"CVE-2026-63852","revision":"fae5860fdeaa4d69852360958676b570","records":[{"revision":"fae5860fdeaa4d69852360958676b570","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-63852","aliases":[],"title":"drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 enc ring","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 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 ff1a5a125c5a70c328806b9bc01d7d942cf3f9aa)","state":0,"publishedAt":"2026-07-19T14:04:43.258+00:00","modifiedAt":"2026-10-19T20:07:51.529+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_3.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b889ef4ac98837838c38f7b9f72bba2f33ee367d\",\n                            \"lessThan\": \"c12a5d35033c0640c57c10d7111c010c7b9c2c8e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b889ef4ac98837838c38f7b9f72bba2f33ee367d\",\n                            \"lessThan\": \"387b7c7667bd5c53549350ddad866d2fcf75a529\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b889ef4ac98837838c38f7b9f72bba2f33ee367d\",\n                            \"lessThan\": \"9076a83e5adefd10dc5c967c7b8bde601c4c512a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b889ef4ac98837838c38f7b9f72bba2f33ee367d\",\n                            \"lessThan\": \"0177ac6141c8857130cf365369c74dee7b6b1f7f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b889ef4ac98837838c38f7b9f72bba2f33ee367d\",\n                            \"lessThan\": \"4532b52b34e4e4310386e6fdf6a643368599f522\",\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_3.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.141\",\n                            \"lessThanOrEqual\": \"6.6.*\",\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/c12a5d35033c0640c57c10d7111c010c7b9c2c8e","https://git.kernel.org/stable/c/387b7c7667bd5c53549350ddad866d2fcf75a529","https://git.kernel.org/stable/c/9076a83e5adefd10dc5c967c7b8bde601c4c512a","https://git.kernel.org/stable/c/0177ac6141c8857130cf365369c74dee7b6b1f7f","https://git.kernel.org/stable/c/4532b52b34e4e4310386e6fdf6a643368599f522"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63852","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-63852","identifiers":["CVE-2026-63852"]},"retained":false,"historicalAffected":[]}],"coverage":[]}