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.
https://access.redhat.com/errata/RHSA-2026:94630
https://access.redhat.com/errata/RHSA-2026:94629
https://git.dpdk.org/dpdk/commit/?id=6ec17781346e0fe4b566b6bf8f79be71f87c10e4
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101421
https://bugzilla.redhat.com/show_bug.cgi?id=2529667
https://access.redhat.com/security/cve/CVE-2026-86562
Source: Mitre, NVD
Published: 2026-10-14
Updated: 2026-11-04
Base Score: 6.8
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
Severity: Medium
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.00176