Vulnerability Description
KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kubevirt | Kubevirt | < 1.5.3 |
Related Weaknesses (CWE)
References
- https://github.com/kubevirt/kubevirt/commit/3ce9f41c54d04a65f10b23a46771391c0065Patch
- https://github.com/kubevirt/kubevirt/commit/8644dbe0d04784b0bfa8395b91ecbd6001f8Patch
- https://github.com/kubevirt/kubevirt/commit/f59ca63133f25de8fceb3e2a0e5cc0b7bdb6Patch
- https://github.com/kubevirt/kubevirt/security/advisories/GHSA-2r4r-5x78-mvqfExploitVendor Advisory
FAQ
What is CVE-2025-64437?
CVE-2025-64437 is a vulnerability with a CVSS score of 5.0 (MEDIUM). KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This over...
How severe is CVE-2025-64437?
CVE-2025-64437 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-64437?
Check the references section above for vendor advisories and patch information. Affected products include: Kubevirt Kubevirt.