Link Following Affecting kubevirt-virtctl package, versions <1.6.3-150700.3.13.1


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-SLES157-KUBEVIRTVIRTCTL-14287455
  • published10 Dec 2025
  • disclosed9 Dec 2025

Introduced: 9 Dec 2025

NewCVE-2025-64437  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kubevirt-virtctl to version 1.6.3-150700.3.13.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kubevirt-virtctl package and not the kubevirt-virtctl package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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 Base Scores

version 3.1