CVE catalog
CVE-2026-13322
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 r
- Severity
- Low · CVSS 3.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.13% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | openshift_virtualization | Not reported | Not reported | unknown |
| Cpe | kubevirt | Not reported | Not reported | unknown |
| Cpe | openshift_virtualization | Not reported | Not reported | unknown |
| Cpe | kubevirt | Not reported | Not reported | unknown |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/security/cve/CVE-2026-13322]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2492681]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-13322]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-13322.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]