CVE-2025-68313
x86/CPU/AMD: Add RDSEED fix for Zen5
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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. ]
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 16, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
3e4147f33f8b647775357bae0248b9a2aeebfcd2 < e980de2ff109dacb6d9d3a77f01b27c467115ecb 3e4147f33f8b647775357bae0248b9a2aeebfcd2 < 36ff93e66d0efc46e39fab536a9feec968daa766 3e4147f33f8b647775357bae0248b9a2aeebfcd2 < 607b9fb2ce248cc5b633c5949e0153838992c152
Linux / Linux
6.8