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 (3)
Core 3
Scores
EPSS
0.0002
EPSS Percentile
7.0%
Details
Status
published
Products (10)
linux/Kernel
6.13.0 - 6.17.8linux
linux/Kernel
6.8.0 - 6.12.58linux
Linux/Linux
< 6.8
Linux/Linux
3e4147f33f8b647775357bae0248b9a2aeebfcd2 - 36ff93e66d0efc46e39fab536a9feec968daa766
Linux/Linux
3e4147f33f8b647775357bae0248b9a2aeebfcd2 - 607b9fb2ce248cc5b633c5949e0153838992c152
Linux/Linux
3e4147f33f8b647775357bae0248b9a2aeebfcd2 - e980de2ff109dacb6d9d3a77f01b27c467115ecb
Linux/Linux
6.12.58 - 6.12.*
Linux/Linux
6.17.8 - 6.17.*
Linux/Linux
6.18
Linux/Linux
6.8
Published
Dec 16, 2025
Tracked Since
Feb 18, 2026