209 lines
9.9 KiB
JSON
209 lines
9.9 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2025-68313",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-16T14:48:05.295Z",
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"datePublished": "2025-12-16T15:39:43.972Z",
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"dateUpdated": "2026-10-15T22:02:49.013Z"
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},
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"shortName": "Linux",
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"dateUpdated": "2026-09-02T12:49:29.117Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "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. ]"
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}
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{
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The affected RDSEED forms are directly executable by local user-space code; no syscall or network packet directly reaches the primitive.\nAC:L - An attacker can create the demonstrated RDSEED and memory-pressure workload using concurrent threads, so the triggering conditions are attacker-controlled.\nPR:L - An ordinary unprivileged process can execute RDSEED and induce contention without capabilities, root access, or namespace privileges.\nUI:N - Exploitation requires no action by a human victim once affected software consumes RDSEED-derived entropy.\nS:U - The impact remains within the affected host or guest security authority, with no demonstrated guest-to-host escape or other scope crossing.\nC:H - Predictable seed material can compromise cryptographic private keys, session keys, or nonces, potentially exposing all data protected by them.\nI:H - Compromised signing, authentication, or encryption keys can enable impersonation, forgery, and unauthorized modification of protected data.\nA:N - The flaw degrades entropy but does not directly corrupt memory, crash the kernel, hang execution, or exhaust resources."
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}
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]
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}
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],
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"lessThanOrEqual": "6.17.*",
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"status": "unaffected",
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},
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{
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"version": "6.18",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/e980de2ff109dacb6d9d3a77f01b27c467115ecb"
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},
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{
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"url": "https://git.kernel.org/stable/c/36ff93e66d0efc46e39fab536a9feec968daa766"
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},
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{
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"url": "https://git.kernel.org/stable/c/607b9fb2ce248cc5b633c5949e0153838992c152"
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}
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],
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"title": "x86/CPU/AMD: Add RDSEED fix for Zen5",
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"id": "CVE-2025-68313",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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"version": "2.0.3",
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"timestamp": "2026-10-15T22:00:51.579306Z"
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"title": "CISA ADP Vulnrichment",
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