CVE-2022-0175

Publication date 1 February 2022

Last updated 18 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found in the VirGL virtual OpenGL renderer (virglrenderer). The virgl did not properly initialize memory when allocating a host-backed memory resource. A malicious guest could use this flaw to mmap from the guest kernel and read this uninitialized memory from the host, possibly leading to information disclosure.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
virglrenderer	25.10 questing	Fixed 0.9.1-1~exp1ubuntu2
	25.04 plucky	Fixed 0.9.1-1~exp1ubuntu2
	24.10 oracular	Fixed 0.9.1-1~exp1ubuntu2
	24.04 LTS noble	Fixed 0.9.1-1~exp1ubuntu2
	23.10 mantic	Fixed 0.9.1-1~exp1ubuntu2
	23.04 lunar	Fixed 0.9.1-1~exp1ubuntu2
	22.10 kinetic	Fixed 0.9.1-1~exp1ubuntu2
	22.04 LTS jammy	Fixed 0.9.1-1~exp1ubuntu2
	21.10 impish	Fixed 0.8.2-5ubuntu0.21.10.1
	20.04 LTS focal	Fixed 0.8.2-1ubuntu1.1
	18.04 LTS bionic	Vulnerable
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

Patch details

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

Package	Patch details
virglrenderer	Upstream: b05bb61

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-5309-1
virglrenderer vulnerabilities
28 February 2022