CVE-2022-26354

Publication date 16 March 2022

Last updated 18 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found in the vhost-vsock device of QEMU. In case of error, an invalid element was not detached from the virtqueue before freeing its memory, leading to memory leakage and other unexpected results. Affected QEMU versions <= 6.2.0.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	26.04 LTS resolute	Fixed in 1:6.2+dfsg-2ubuntu8
	25.10 questing	Fixed in 1:6.2+dfsg-2ubuntu8
	25.04 plucky	Fixed in 1:6.2+dfsg-2ubuntu8
	24.10 oracular	Fixed in 1:6.2+dfsg-2ubuntu8
	24.04 LTS noble	Fixed in 1:6.2+dfsg-2ubuntu8
	23.10 mantic	Fixed in 1:6.2+dfsg-2ubuntu8
	23.04 lunar	Fixed in 1:6.2+dfsg-2ubuntu8
	22.10 kinetic	Fixed in 1:6.2+dfsg-2ubuntu8
	22.04 LTS jammy	Fixed in 1:6.2+dfsg-2ubuntu6.2
	21.10 impish	Fixed in 1:6.0+dfsg-2expubuntu1.3
	20.04 LTS focal	Fixed in 1:4.2-3ubuntu6.23
	18.04 LTS bionic	Fixed in 1:2.11+dfsg-1ubuntu7.40
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Patch details

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

Package	Patch details
qemu	Upstream: 8d1b247

Severity score breakdown

CVSS version: CVSS v3.0

Base score 3.2 · Low

Base metrics

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

Scores

Parameter	Value
Base score	3.2 · Low
Exploitability score	-
Impact score	-

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

References

Related Ubuntu Security Notices (USN)

USN-5489-1
QEMU vulnerabilities
21 June 2022

Other references

https://www.cve.org/CVERecord?id=CVE-2022-26354