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 de…
Exact source revision recorded 4 Nov 2026 18:05:55 UTC. It does not establish the source's current position. Latest evidence.
nvd · CVE-2026-13322
PublishedA 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.
NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.
Source analysis status: Analyzed
Weakness classifications: CWE-770
Original publisher date fields
published: 2026-06-26T00:16:51.397
lastModified: 2026-10-25T22:10:00.150
2 source CPE criteria · context only
- cpe:2.3:a:redhat:openshift_virtualization:*:*:*:*:*:*:*:*
- cpe:2.3:a:kubevirt:kubevirt:-:*:*:*:*:kubernetes:*:*
The original JSON retains the logical configuration operators, exclusions and version bounds.
- Source published
- 26 Jun 2026 00:16:51 UTC
- Source modified
- 25 Oct 2026 22:10:00 UTC
- Observed here
- 4 Nov 2026 18:05:55 UTC
- Source terms
- NIST NVD usage terms; underlying source attribution retained
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS 3.1 · [email protected] · Secondary · 3.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L