CVE-2026-86562 Dpdk: dpdk: control-queue descriptor double-fetch overflows host heap in dpdk vhost (vduse)
A TOCTOU race condition in DPDK vhost allows heap buffer overflow, potentially enabling code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-86562?
CVE-2026-86562 is a high-severity vulnerability in Red Hat Fast Datapath for RHEL 10, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-362
Which versions are affected by CVE-2026-86562?
How do I fix CVE-2026-86562?
Apply the vendor's patch.
Is CVE-2026-86562 being exploited?
There is no known exploitation of CVE-2026-86562 in the wild and no public exploit code.
Sources
Also known as AZL-108342, DEBIAN-CVE-2026-86562, GHSA-x59g-22jw-gfvw, UBUNTU-CVE-2026-86562.