{"id":"CVE-2025-68313","summary":"x86/CPU/AMD: Add RDSEED fix for Zen5","details":"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. ]","modified":"2026-04-02T13:03:32.153218Z","published":"2025-12-16T15:39:43.972Z","related":["SUSE-SU-2026:0278-1","SUSE-SU-2026:0281-1","SUSE-SU-2026:0293-1","SUSE-SU-2026:0315-1","SUSE-SU-2026:20207-1","SUSE-SU-2026:20220-1","SUSE-SU-2026:20228-1","SUSE-SU-2026:20477-1","SUSE-SU-2026:20498-1","SUSE-SU-2026:20845-1","SUSE-SU-2026:20876-1","openSUSE-SU-2026:20145-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68313.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/36ff93e66d0efc46e39fab536a9feec968daa766"},{"type":"WEB","url":"https://git.kernel.org/stable/c/607b9fb2ce248cc5b633c5949e0153838992c152"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e980de2ff109dacb6d9d3a77f01b27c467115ecb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68313.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68313"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3e4147f33f8b647775357bae0248b9a2aeebfcd2"},{"fixed":"e980de2ff109dacb6d9d3a77f01b27c467115ecb"},{"fixed":"36ff93e66d0efc46e39fab536a9feec968daa766"},{"fixed":"607b9fb2ce248cc5b633c5949e0153838992c152"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68313.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.8.0"},{"fixed":"6.12.58"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.17.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68313.json"}}],"schema_version":"1.7.5"}