CVE-2022-36765

Publication date 9 January 2024

Last updated 18 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

EDK2 is susceptible to a vulnerability in the CreateHob() function, allowing a user to trigger a integer overflow to buffer overflow via a local network. Successful exploitation of this vulnerability may result in a compromise of confidentiality, integrity, and/or availability.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
edk2	26.04 LTS resolute	Not affected
	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Fixed 2023.05-2ubuntu0.1
	23.04 lunar	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 2022.02-3ubuntu0.22.04.2
	20.04 LTS focal	Fixed 0~20191122.bd85bf54-2ubuntu3.5
	18.04 LTS bionic	Ignored end of standard support
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

Severity score breakdown

Parameter	Value
Base score	7.0 · High
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H

References

Related Ubuntu Security Notices (USN)

USN-6638-1
EDK II vulnerabilities
15 February 2024