3.8
Low
CVE-2026-13322 A flaw was found in KubeVirt's downward metrics virtio-serial server
Description
A flaw was found in KubeVirt's downward metrics virtio-serial server. The server reads guest requests using textproto.Reader.ReadLine(), which buffers input indefinitely until a newline character is received, with no length limit or read deadline. A user with access to a VM guest that has the downward metrics virtio-serial device configured can write a continuous byte stream to the device, causing unbounded memory allocation in the virt-handler process until it is OOM-killed.
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#2492681 bugzilla.redhat.com
Timeline
- Published
- Last modified
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