{"id":"CVE-2025-68313","revision":"74d9352bb7cc46b6beb130aca1884508","records":[{"revision":"74d9352bb7cc46b6beb130aca1884508","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-68313","aliases":[],"title":"x86/CPU/AMD: Add RDSEED fix for Zen5","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/CPU/AMD: Add RDSEED fix for Zen5\n\nThere's an issue with RDSEED's 16-bit and 32-bit register output\nvariants on Zen5 which return a random value of 0 \"at a rate inconsistent\nwith randomness while incorrectly signaling success (CF=1)\". Search the\nweb for AMD-SB-7055 for more detail.\n\nAdd a fix glue which checks microcode revisions.\n\n  [ bp: Add microcode revisions checking, rewrite. ]","state":0,"publishedAt":"2025-12-16T15:39:43.972+00:00","modifiedAt":"2026-10-15T22:02:49.013+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                        \"arch/x86/kernel/cpu/amd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3e4147f33f8b647775357bae0248b9a2aeebfcd2\",\n                            \"lessThan\": \"e980de2ff109dacb6d9d3a77f01b27c467115ecb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3e4147f33f8b647775357bae0248b9a2aeebfcd2\",\n                            \"lessThan\": \"36ff93e66d0efc46e39fab536a9feec968daa766\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3e4147f33f8b647775357bae0248b9a2aeebfcd2\",\n                            \"lessThan\": \"607b9fb2ce248cc5b633c5949e0153838992c152\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5953e7a89966fc5a42124a08ba33a9c57ba5173c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.6.156\",\n                            \"lessThan\": \"6.7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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                        \"arch/x86/kernel/cpu/amd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.58\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.8\",\n                            \"lessThanOrEqual\": \"6.17.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18\",\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:N","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/e980de2ff109dacb6d9d3a77f01b27c467115ecb","https://git.kernel.org/stable/c/36ff93e66d0efc46e39fab536a9feec968daa766","https://git.kernel.org/stable/c/607b9fb2ce248cc5b633c5949e0153838992c152"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-68313","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-68313","identifiers":["CVE-2025-68313"]},"retained":false,"historicalAffected":[]}],"coverage":[]}