Summary
Workarounds
- Ensure that the
HotplugVolumesfeature-gate is disabled - ContainerDisk support can't be disabled. The only known way to mitigate this issue is create with e.g. policy controller a conditiontemplate which ensures that no containerDisk gets added and that
spec.domain.firmware.kernelBootis not used on VirtualMachineInstances.| - Ensure that SELinux is enabled. It blocks most attempts to read host files but does not provide a 100% guarantee (like vm-to-vm read may still work).
References
Disclosure notice form the discovering party: https://github.com/google/security-research/security/advisories/GHSA-cvx8-ppmc-78hm
For more information
For interested vendors which have to provide a fix for their supported versions, the following PRs are providing the fix:
Credits
Oliver Brooks and James Klopchic of NCC Group
Diane Dubois and Roman Mohr of Google
Impact
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
KubeVirt 0.55.1 provides patches to fix the vulnerability.
Frequently Asked Questions
- What is GHSA-QV98-3369-G364? GHSA-QV98-3369-G364 is a high-severity security vulnerability in kubevirt.io/kubevirt (go), affecting versions >= 0.20.0, < 0.55.1. It is fixed in 0.55.1.
- Which versions of kubevirt.io/kubevirt are affected by GHSA-QV98-3369-G364? kubevirt.io/kubevirt (go) versions >= 0.20.0, < 0.55.1 is affected.
- Is there a fix for GHSA-QV98-3369-G364? Yes. GHSA-QV98-3369-G364 is fixed in 0.55.1. Upgrade to this version or later.
- Is GHSA-QV98-3369-G364 exploitable, and should I be worried? Whether GHSA-QV98-3369-G364 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-QV98-3369-G364 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-QV98-3369-G364? Upgrade
kubevirt.io/kubevirtto 0.55.1 or later.