What is GHSA-hccf-2qv6-3rfj?

GHSA-hccf-2qv6-3rfj is a security advisory published by GitHub Security Advisories with High severity. In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Add RDSEED fix...

Which CVE IDs does GHSA-hccf-2qv6-3rfj cover?

GHSA-hccf-2qv6-3rfj covers the following CVE IDs: CVE-2025-68313. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-hccf-2qv6-3rfj?

GHSA-hccf-2qv6-3rfj has a CVSS v3 base score of 7.1, published by GitHub Security Advisories.

GHSA-hccf-2qv6-3rfjHighCVSS 7.1

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Add RDSEED fix...

Vendor

GitHub Security Advisories

Published

December 16, 2025

Last Modified

July 30, 2026

🔗 CVE IDs covered (1)

CVE-2025-68313 →

📋 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. ]

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2025-68313
https://git.kernel.org/stable/c/36ff93e66d0efc46e39fab536a9feec968daa766
https://git.kernel.org/stable/c/607b9fb2ce248cc5b633c5949e0153838992c152
https://git.kernel.org/stable/c/e980de2ff109dacb6d9d3a77f01b27c467115ecb
https://github.com/advisories/GHSA-hccf-2qv6-3rfj