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Back to active CVEs
High · CVSS 7.1CVE-2025-68313

x86/CPU/AMD: Add RDSEED fix for Zen5CVE-2025-68313

Answer in brief

CVE-2025-68313 records a High severity (CVSS 7.1) vulnerability in x86/CPU/AMD: Add RDSEED fix for Zen5. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Dec 16, 2025Updated Oct 15, 2026Source checked Oct 17, 2026First seen by HOL Sep 2, 2026Material review Oct 15, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=3e4147f33f8b647775357bae0248b9a2aeebfcd2 <e980de2ff109dacb6d9d3a77f01b27c467115ecb || >=3e4147f33f8b647775357bae0248b9a2aeebfcd2 <36ff93e66d0efc46e39fab536a9feec968daa766 || >=3e4147f33f8b647775357bae0248b9a2aeebfcd2 <607b9fb2ce248cc5b633c5949e0153838992c152 || 5953e7a89966fc5a42124a08ba33a9c57ba5173c || >=6.6.156 <6.7e980de2ff109dacb6d9d3a77f01b27c467115ecb, 36ff93e66d0efc46e39fab536a9feec968daa766, 607b9fb2ce248cc5b633c5949e0153838992c152, 6.7
Linux/Linuxgeneric6.8Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to e980de2ff109dacb6d9d3a77f01b27c467115ecb if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Dec 16, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 2, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Add RDSEED fix for Zen5 There's an issue with RDSEED's 16-bit and 32-bit register output variants on Zen5 which return a random value of 0 "at a rate inconsistent with randomness while incorrectly signaling success (CF=1)". Search the web for AMD-SB-7055 for more detail. Add a fix glue which checks microcode revisions. [ bp: Add microcode revisions checking, rewrite. ]

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 17, 2026
References
3 linked sources
Open source record