CVE-2026-62429 vNUMA domain cleanup may race other operations
A race condition in Xen's vNUMA cleanup allows device models to access destroyed domain data, potentially causing crashes or undefined behavior.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-62429?
CVE-2026-62429 is a medium-severity vulnerability in Xen, published on 28 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Accessing the vNUMA configuration data of a guest is still possible when domain destruction has already started. The cleaning up of that configuration information is not synchronized with its retrieval by a device model controlling the guest.
Weakness: CWE-362
Which versions are affected by CVE-2026-62429?
How do I fix CVE-2026-62429?
Apply the vendor's patch.
Is CVE-2026-62429 being exploited?
There is no known exploitation of CVE-2026-62429 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2026-62429, DEBIAN-CVE-2026-62429, GHSA-8fgv-987v-pg9v, UBUNTU-CVE-2026-62429.