CVE-2021-0127

Publication date 9 February 2022

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Insufficient control flow management in some Intel(R) Processors may allow an authenticated user to potentially enable a denial of service via local access.

From the Ubuntu Security Team

It was discovered that some Intel processors may not implement sufficient control flow management. This may allow a local authenticated user to cause a denial of service.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
intel-microcode	22.10 kinetic	Fixed 3.20220207.1ubuntu1
	22.04 LTS jammy	Fixed 3.20220510.0ubuntu0.22.04.1
	21.10 impish	Fixed 3.20220510.0ubuntu0.21.10.1
	20.04 LTS focal	Fixed 3.20220510.0ubuntu0.20.04.1
	18.04 LTS bionic	Fixed 3.20220510.0ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 3.20220510.0ubuntu0.16.04.1+esm1
	14.04 LTS trusty	Ignored early microcode loading not allowed

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Notes

alexmurray

Updates available in upstream release https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20220207

Severity score breakdown

Parameter	Value
Base score	5.6 · Medium
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H