CVE-2022-0175: A flaw was found in the VirGL virtual OpenGL renderer (virglrenderer)

Routine

MEDIUM 5.5WATCHLISTDOWNGRADEMITIGATE

CVE-2022-0175 is a medium-severity flaw (CVSS 5.5) affecting virglrenderer, enterprise linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-909
Published	2022-08-26
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: redhat · virglrenderer project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-08-26 18:15 UTCPublished CVE record published
2026-06-17 04:20 UTCUpdated Record last modified

virglrenderer project virglrenderer DOWNGRADE

Affected: 0.9.0 · 0.9.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.0

1. Check installed version

apt-cache policy virglrenderer || rpm -q virglrenderer || virglrenderer --version

2. No fixed release: DOWNGRADE to a release before 0.9.0 (Debian / Ubuntu)

apt-cache madison virglrenderer sudo apt install virglrenderer=<VERSION_BEFORE_0.9.0> sudo apt-mark hold virglrenderer

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list virglrenderer sudo dnf downgrade virglrenderer-<VERSION_BEFORE_0.9.0> sudo dnf versionlock add virglrenderer

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

redhat enterprise linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-0175?

virglrenderer: downgrade or apply the listed mitigation; enterprise linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-0175 being exploited?

CVE-2022-0175 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-0175 affect?

CVE-2022-0175 affects virglrenderer, enterprise linux. Severity is medium (CVSS 5.5). 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

How urgent is CVE-2022-0175?

Priority 31/100. On your watchlist

Related CVEs

CVE-2022-0135 HIGH 7.8 UPGRADE MITIGATE An out-of-bounds write issue was found in the VirGL virtual OpenGL renderer (virglrenderer)

References

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