Vulnerability · Published Feb 6, 2025 · Assigned by Go
CVE-2025-22866Timing sidechannel for P-256 on ppc64le in crypto/internal/nistec
Medium 4.0
In plain English
A medium-severity security flaw in crypto/internal/nistec from Go standard library. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.0Medium
Exploit odds (30 days)0.3%top 78.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | delve | 1.24.1-1.el10_0 | ALSA-2025:7466 |
| AlmaLinux:10 | go-toolset | 1.23.7-1.el10_0.alma.1 | ALSA-2025:7466 |
| AlmaLinux:10 | golang | 1.23.7-1.el10_0.alma.1 | ALSA-2025:7466 |
| AlmaLinux:10 | golang-bin | 1.23.7-1.el10_0.alma.1 | ALSA-2025:7466 |
| AlmaLinux:10 | golang-docs | 1.23.7-1.el10_0.alma.1 | ALSA-2025:7466 |
| AlmaLinux:10 | golang-misc | 1.23.7-1.el10_0.alma.1 | ALSA-2025:7466 |
| AlmaLinux:10 | golang-src | 1.23.7-1.el10_0.alma.1 | ALSA-2025:7466 |
| AlmaLinux:10 | golang-tests | 1.23.7-1.el10_0.alma.1 | ALSA-2025:7466 |
| AlmaLinux:8 | osbuild-composer | 101.5-3.el8_10.alma.1 | ALSA-2026:67148 |
| AlmaLinux:8 | osbuild-composer-core | 101.5-3.el8_10.alma.1 | ALSA-2026:67148 |
| AlmaLinux:8 | osbuild-composer-worker | 101.5-3.el8_10.alma.1 | ALSA-2026:67148 |
| Alpine:v3.21 | go | 1.23.6-r0 | ALPINE-CVE-2025-22866 |
| Alpine:v3.22 | go | 1.23.6-r0 | ALPINE-CVE-2025-22866 |
| Alpine:v3.23 | go | 1.23.6-r0 | ALPINE-CVE-2025-22866 |
| Alpine:v3.24 | go | 1.23.6-r0 | ALPINE-CVE-2025-22866 |
| Debian:12 | golang-1.19 | no fix listed | DEBIAN-CVE-2025-22866 |
| Debian:13 | golang-1.24 | 1.24~rc3-1 | DEBIAN-CVE-2025-22866 |
| Go | stdlib | 1.22.12, 1.23.6, 1.24.0-rc.3 | GO-2025-3447 |
| Rocky Linux:10 | delve | 0:1.24.1-1.el10_0 | RLSA-2025:7466 |
| Rocky Linux:9 | delve | 0:1.24.1-2.el9_6 | RLSA-2025:3773 |
| Rocky Linux:10 | golang | 0:1.23.7-1.el10_0 | RLSA-2025:7466 |
| Rocky Linux:9 | golang | 0:1.23.6-2.el9_6 | RLSA-2025:3773 |
| Rocky Linux:8 | osbuild-composer | 0:101.5-3.el8_10.rocky.0.6 | RLSA-2026:67148 |
| Ubuntu:22.04:LTS | golang-1.17 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:22.04:LTS | golang-1.18 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:22.04:LTS | golang-1.20 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:22.04:LTS | golang-1.21 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:24.04:LTS | golang-1.21 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:22.04:LTS | golang-1.22 | 1.22.2-2~22.04.3 | USN-7574-1 |
| Ubuntu:22.04:LTS | golang-1.22 | 1.22.2-2~22.04.3 | UBUNTU-CVE-2025-22866 |
| Ubuntu:24.04:LTS | golang-1.22 | 1.22.2-2ubuntu0.4 | USN-7574-1 |
| Ubuntu:24.04:LTS | golang-1.22 | 1.22.2-2ubuntu0.4 | UBUNTU-CVE-2025-22866 |
| Ubuntu:22.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:24.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:25.10 | golang-1.23 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:26.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:22.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:24.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:25.10 | golang-1.24 | no fix listed | UBUNTU-CVE-2025-22866 |
| Ubuntu:26.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-22866 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Go standard library | crypto/internal/nistec | 0 – before 1.22.121.23.0-0 – before 1.23.61.24.0-0 – before 1.24.0-rc.3 |