CVE-2025-22866

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

State: Published
Severity: 4.0 Medium
Published: Feb 6, 2025
Updated: Feb 21, 2025
Reserved: Jan 8, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	4.0 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
crypto/internal/nistecGo standard library	before 1.22.12Affected 1.23.0-0 to before 1.23.6Affected 1.24.0-0 to before 1.24.0-rc.3Affected

References

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