4.2
Medium
CVE-2026-13218 A flaw was found in KubeVirt's virt-handler network cache handling
Description
A flaw was found in KubeVirt's virt-handler network cache handling. The WriteToCachedFile function writes data to a launcher-rooted path using os.WriteFile and os.Chown without symlink protection. A user with access to the virt-launcher container can plant a symlink at the cache file path, causing virt-handler to follow it and overwrite an arbitrary host file with JSON content and change its ownership.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat OpenShift Virtualization 4 | Versions not published |
References
- access.redhat.com access.redhat.com
- RHBZ#2492654 bugzilla.redhat.com
Timeline
- Published
- Last modified
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