Low [CVE-2026-86564] Dpdk: dpdk: missing length validation before reading command_data in virtio-net control queue handler
This low-severity Red Hat Linux advisory covers CVE-2026-86564 affecting Fast Datapath for RHEL 10, Fast Datapath for RHEL 8, Fast Datapath for RHEL 9.
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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.
A malicious guest with access to the VDUSE virtio-net control virtqueue can trigger this flaw. Red Hat has rated this as having a security impact of Low.
Red Hat severity: Low — CVSS 3.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-125.
Affected Red Hat products: Fast Datapath for RHEL 10; Fast Datapath for RHEL 8; Fast Datapath for RHEL 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: dpdk-devel; Red Hat package: dpdk-doc; Red Hat package: dpdk-tools; Red Hat package: dpdk.src; and 1 more.
Affected products named by the advisory: Red Hat package: driverctl.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- No mitigation is currently available.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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