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CVE-2021-38578

Publication date 3 March 2022

Last updated 10 October 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

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

Status

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
16.04 LTS xenial
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

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

Other references