CVE-2026-13322

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.

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Produits concernés

• Red Hat OpenShift Virtualization 4
• Redhat openshift virtualization
• Kubevirt kubevirt

Scores CVSS

Faiblesses (CWE)

• CWE-770

Références

• https://access.redhat.com/security/cve/CVE-2026-13322 MitigationVendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2492681 Issue TrackingVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories