CVE-2022-23823

Publication date 15 June 2022

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A potential vulnerability in some AMD processors using frequency scaling may allow an authenticated attacker to execute a timing attack to potentially enable information disclosure.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
amd64-microcode	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

mdeslaur

AMD will not be fixing this issue with microcode updates. As of 2022-06-16, there are no software mitigations available to fix this issue.

Severity score breakdown

CVSS version: CVSS v3.0

Base score 6.5 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	None
Availability impact	None

Scores

Parameter	Value
Base score	6.5 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N