Public vulnerability disclosure

CVE-2026-86562

Dpdk: dpdk: control-queue descriptor double-fetch overflows host heap in dpdk vhost (vduse)

publishedCWE-362

A flaw was found in DPDK lib/vhost. A TOCTOU double-fetch of control-queue descriptors allows a heap buffer overflow with attacker-controlled content in the VDUSE control-queue handler.

Investigate in Cyber JSON Markdown

Technical severity7.8 highCVSS 3.1 · CNA: redhat

Published2026-10-14Source updated 2026-11-02

Collected2026-11-022 attributed sources

Fixes and workarounds

Workaround

No mitigation is currently available.

Source: CNA: redhat

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
Fast Datapath for RHEL 10 Red Hat `grout` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 10 Red Hat `openvswitch3.5` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 10 Red Hat `openvswitch3.6` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 8 Red Hat `openvswitch2.11` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 8 Red Hat `openvswitch2.12` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 8 Red Hat `openvswitch2.13` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 8 Red Hat `openvswitch2.15` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 8 Red Hat `openvswitch2.16` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 8 Red Hat `openvswitch2.17` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 8 Red Hat `openvswitch3.1` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `grout` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `openvswitch2.17` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `openvswitch3.0` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `openvswitch3.1` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `openvswitch3.2` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `openvswitch3.3` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `openvswitch3.4` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `openvswitch3.5` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Fast Datapath for RHEL 9 Red Hat `openvswitch3.6` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 10 Red Hat `dpdk` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8 Red Hat `dpdk` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9 Red Hat `dpdk` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenShift Container Platform 4 Red Hat `openvswitch2.17` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenShift Container Platform 4 Red Hat `openvswitch3.0` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat
Red Hat OpenShift Container Platform 4 Red Hat `openvswitch3.1` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenStack Platform 13 (Queens) Red Hat `openvswitch` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 7.8 high	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`	CNA: redhat

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://access.redhat.com/security/cve/CVE-2026-86562CNA: redhat · vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2529667CNA: redhat · issue-tracking, x_refsource_REDHAT
https://git.dpdk.org/dpdk/commit/?id=6ec17781346e0fe4b566b6bf8f79be71f87c10e4CNA: redhat