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CVE-2026-13322

3.8 low SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 3.8 · redhat, kubevirtNVD modified 2026-10-25 22:10

Affected (CPE criteria) 2

  • cpe:2.3:a:redhat:openshift_virtualization:*:*:*:*:*:*:*:*
  • cpe:2.3:a:kubevirt:kubevirt:-:*:*:*:*:kubernetes:*:*

References 2