Xen: Denial of service exploitable from guest system

A flaw in Xen allows an attacker, from a guest system, to cause a denial of service via Domctl Lock.

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The fact

The vulnerability, analyzed on June 9, 2026, affects virtualized environments using Xen.

Administrators are urged to apply patches to prevent service disruptions.

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Auto-synthesis from 1 media source · identified on June 24, 2026