CVE-2026-86562
dpdk: dpdk: Control-queue descriptor double-fetch overflows host heap in DPDK vhost (VDUSE)
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 15, 2026
Updated · November 5, 2026
Description
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.
Statement
A malicious guest with access to the VDUSE control virtqueue can trigger this flaw. Red Hat has rated this as having a security impact of Important.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is currently available.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization