CVE-2026-13322
lowpriority · track · 0EPSS 0.001 · 3 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
- redhat openshift virtualization4 → 4.22.0nvdUScpe:2.3:a:redhat:openshift_virtualization:*:*:*:*:*:*:*:*
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/CVE-2026-13322cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2492681cnnvd
- https://access.redhat.com/security/cve/CVE-2026-13322enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2492681enisa_euvd
- https://access.redhat.com/security/cve/CVE-2026-13322MitigationVendor Advisorynvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2492681Issue TrackingVendor Advisorynvd
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