CVE-2021-38578

Publication date 3 March 2022

Last updated 10 October 2024

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
edk2	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Ignored end of life, was needed
	22.04 LTS jammy	Fixed 2022.02-3ubuntu0.22.04.3
	21.10 impish	Ignored end of life
	20.04 LTS focal	Fixed 0~20191122.bd85bf54-2ubuntu3.6
	18.04 LTS bionic	Fixed 0~20180205.c0d9813c-2ubuntu0.3+esm2 Ubuntu Pro
	16.04 LTS xenial	Fixed 0~20160408.ffea0a2c-2ubuntu0.2+esm3 Ubuntu Pro
	14.04 LTS trusty	Ignored end of standard support

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
edk2	Upstream: cab1f02

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-7060-1
EDK II vulnerabilities
10 October 2024