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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2025-68313

x86/CPU/AMD: Add RDSEED fix for Zen5

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Status
Published
Published
Updated
Assigning organization
Linux

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. ]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 3e4147f33f8b647775357bae0248b9a2aeebfcd2 to < e980de2ff109dacb6d9d3a77f01b27c467115ecbaffected
  • 3e4147f33f8b647775357bae0248b9a2aeebfcd2 to < 36ff93e66d0efc46e39fab536a9feec968daa766affected
  • 3e4147f33f8b647775357bae0248b9a2aeebfcd2 to < 607b9fb2ce248cc5b633c5949e0153838992c152affected
  • 5953e7a89966fc5a42124a08ba33a9c57ba5173caffected
  • 6.6.156 to < 6.7affected

Linux Linux

Default version status: affected

  • 6.8affected
  • 0 to < 6.8unaffected
  • 6.12.58 to ≤ 6.12.*unaffected
  • 6.17.8 to ≤ 6.17.*unaffected
  • 6.18 to ≤ *unaffected

References