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AMD confirms Zen 5 chips hit by critical bug - but a fix on the way


Affecting a wide range of EPYC and Ryzen processors, the bug compromises a processor's pseudorandom number generator.

5th-generation AMD EPYC processors are among the affected silicon. AMD/ZDNET

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ZDNET's key takeaways

  • This critical bug affects a large number of Zen 5 generation chips.
  • The issue impacts the processor's pseudorandom number generator.
  • AMD has fixes in the pipeline.

A Meta engineer uncovered an RDSEED bug affecting a range of AMD processors that compromises the processor's pseudorandom number generator. 

The good news is that there's a fix in the works.

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The bug was uncovered by Meta engineer Gregory Price, and details were posted to a Linux kernel mailing list.

Price wrote: 

"Under unknown architectural conditions, Zen5 chips running rdseed can produce (val ...


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