CVE-2025-68313

HighCVSS 7.1/10Last modified Oct 15, 2026

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. ]

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected software

No affected versions have been published.

Timeline

Published
Dec 16, 2025
Last modified
Oct 15, 2026
NVD status
Deferred

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CVE-2025-68313: High severity, CVSS 7.1 | Vulnix