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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 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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2c97e93a25a120c2da80c8ad2a0337b7e8540e4a4c60433c8b93197472b6ebea
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:container_native_virtualization:4"],"defaultStatus":"affected","packageName":"container-native-virtualization/virt-handler","product":"Red Hat OpenShift Virtualization 4","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5f31059544ec26c762debda0050b16ebdc2f953291e7da2c19c1ea79c4176d67 · sha256:3f8d46de4b735d6b… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:container_native_virtualization:4"],"defaultStatus":"affected","packageName":"container-native-virtualization/virt-handler-rhel9","product":"Red Hat OpenShift Virtualization 4","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5f31059544ec26c762debda0050b16ebdc2f953291e7da2c19c1ea79c4176d67 · sha256:3f8d46de4b735d6b… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:container_native_virtualization:4"],"defaultStatus":"affected","packageName":"container-native-virtualization/virt-handler","product":"Red Hat OpenShift Virtualization 4","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5f31059544ec26c762debda0050b16ebdc2f953291e7da2c19c1ea79c4176d67 · sha256:3f8d46de4b735d6b… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:container_native_virtualization:4"],"defaultStatus":"affected","packageName":"container-native-virtualization/virt-handler-rhel9","product":"Red Hat OpenShift Virtualization 4","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5f31059544ec26c762debda0050b16ebdc2f953291e7da2c19c1ea79c4176d67 · sha256:3f8d46de4b735d6b… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":3.8,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5f31059544ec26c762debda0050b16ebdc2f953291e7da2c19c1ea79c4176d67 · sha256:3f8d46de4b735d6b… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-770","description":"Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5f31059544ec26c762debda0050b16ebdc2f953291e7da2c19c1ea79c4176d67 · sha256:3f8d46de4b735d6b… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-13322"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5f31059544ec26c762debda0050b16ebdc2f953291e7da2c19c1ea79c4176d67 · sha256:3f8d46de4b735d6b… · /containers/cna/references/0
{"name":"RHBZ#2492681","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492681"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5f31059544ec26c762debda0050b16ebdc2f953291e7da2c19c1ea79c4176d67 · sha256:3f8d46de4b735d6b… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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