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CVE-2025-64437
Good to know:
Date: November 7, 2025
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.
Severity Score
Related Resources (7)
Severity Score
Weakness Type (CWE)
Improper Link Resolution Before File Access ('Link Following')
CWE-59Top Fix
Upgrade Version
Upgrade to version github.com/kubevirt/kubevirt - v1.5.3;github.com/kubevirt/kubevirt - v1.6.0-beta.0.0.20250801202148-3ce9f41c54d0
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | LOCAL |
| Attack Complexity (AC): | HIGH |
| Privileges Required (PR): | HIGH |
| User Interaction (UI): | NONE |
| Scope (S): | CHANGED |
| Confidentiality (C): | LOW |
| Integrity (I): | LOW |
| Availability (A): | LOW |