CVE-2025-68313
N/A
N/A
Summary
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. ]
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 3e4147f33f8b647775357bae0248b9a2aeebfcd2 < e980de2ff109dacb6d9d3a77f01b27c467115ecb | affected |
| Linux | Linux | 3e4147f33f8b647775357bae0248b9a2aeebfcd2 < 36ff93e66d0efc46e39fab536a9feec968daa766 | affected |
| Linux | Linux | 3e4147f33f8b647775357bae0248b9a2aeebfcd2 < 607b9fb2ce248cc5b633c5949e0153838992c152 | affected |
| Linux | Linux | 6.8 | affected |
| Linux | Linux | 0 < 6.8 | unaffected |
| Linux | Linux | 6.12.58 <= 6.12.* | unaffected |
| Linux | Linux | 6.17.8 <= 6.17.* | unaffected |
| Linux | Linux | 6.18 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/e980de2ff109dacb6d9d3a77f01b27c467115ecb
- https://git.kernel.org/stable/c/36ff93e66d0efc46e39fab536a9feec968daa766
- https://git.kernel.org/stable/c/607b9fb2ce248cc5b633c5949e0153838992c152
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