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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":"PUBLISHED","assigner":"Linux","published_at":"2025-12-16 16:16:10","updated_at":"2026-07-30 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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. ]"}],"metrics":[{"cvssV3_1":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-30T06:03:56.555Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e980de2ff109dacb6d9d3a77f01b27c467115ecb"},{"url":"https://git.kernel.org/stable/c/36ff93e66d0efc46e39fab536a9feec968daa766"},{"url":"https://git.kernel.org/stable/c/607b9fb2ce248cc5b633c5949e0153838992c152"}],"title":"x86/CPU/AMD: Add RDSEED fix for Zen5","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2025-68313","datePublished":"2025-12-16T15:39:43.972Z","dateReserved":"2025-12-16T14:48:05.295Z","dateUpdated":"2026-07-30T06:03:56.555Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-16 16:16:10","lastModifiedDate":"2026-07-30 06:24:37","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:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.8,"impactScore":5.2}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"68313","Ordinal":"1","Title":"x86/CPU/AMD: Add RDSEED fix for Zen5","CVE":"CVE-2025-68313","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"68313","Ordinal":"1","NoteData":"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. ]","Type":"Description","Title":"x86/CPU/AMD: Add RDSEED fix for Zen5"}]}}}