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CVE PROGRAM SOURCE RECORD4.0 Medium

CVE-2025-22866

Timing sidechannel for P-256 on ppc64le in crypto/internal/nistec

Description

Due to the usage of a variable time instruction in the assembly implementation of an internal function, a small number of bits of secret scalars are leaked on the ppc64le architecture. Due to the way this function is used, we do not believe this leakage is enough to allow recovery of the private key when P-256 is used in any well known protocols.

Affected products

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

Go standard library crypto/internal/nistec

Default version status: unaffected

  • 0 to < 1.22.12affected
  • 1.23.0-0 to < 1.23.6affected
  • 1.24.0-0 to < 1.24.0-rc.3affected

References