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Fencer Vulns
low 3.3

CVE-2026-86564 json

Dpdk: dpdk: missing length validation before reading command_data in virtio-net control queue handler

published 2026-09-08 2 mo ago modified 2026-11-06 2 d ago also EUVD-2026-74296

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

A flaw was found in DPDK lib/vhost. Missing length validation before reading command_data in the virtio-net control-queue handler can cause an out-of-bounds read and a host process crash.

Patch / fix

  • dpdk Debian 13 24.11.8-0+deb13u1
  • dpdk Debian 14 25.11.4-1

debian advisories DEBIAN-CVE-2026-86564

  • dpdk Azure Linux 3.0 23.11.8-1

azure linux advisories AZL-100926

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-86564 updated cvss 3.3

dpdk: dpdk: Missing length validation before reading command_data in virtio-net control queue handler

  • Red Hat Fast Datapath for RHEL 8 openvswitch3.1, openvswitch2.11, openvswitch2.12, openvswitch2.13, openvswitch2.15, openvswitch2.16, +27 more Red Hat Fast Datapath for RHEL 9 openvswitch3.1, openvswitch3.2, openvswitch3.3, openvswitch3.4, openvswitch2.17, openvswitch3.0-test, +26 more Red Hat Fast Datapath for RHEL 10 openvswitch3.5-test, openvswitch3.6-test, openvswitch3.5-ipsec, openvswitch3.6-ipsec, python3-openvswitch3.5, python3-openvswitch3.6, +2 more Red Hat Enterprise Linux 8 dpdk, dpdk-tools, dpdk 25.11-1.el10 Red Hat Enterprise Linux 9 dpdk, dpdk-tools, dpdk 25.11-1.el10 Red Hat Enterprise Linux 10 dpdk 25.11-1.el10
    +1 more products
    Red Hat OpenShift Container Platform 4 openvswitch3.0, openvswitch3.1, openvswitch2.17, openvswitch3.0-test, openvswitch3.1-test, openvswitch2.17-test, +8 more
    affected: workaround, no fix available “No mitigation is currently available.”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
1 mo ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Red Hat Fast Datapath for RHEL 10
  • Red Hat Fast Datapath for RHEL 8
  • Red Hat Fast Datapath for RHEL 9
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenShift Container Platform 4

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.