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vulnerabilities
Xen Security Advisory 509 v3 (CVE-2026-62437) - x86: DMs may cause mem leak by IRQ binding
Xen released Security Advisory 509 (CVE-2026-62437) disclosing a memory leak vulnerability on x86 systems where domain managers may fail to properly clean up interrupt request (IRQ) bindings when PCI devices are removed from terminated guests. The advisory was published in version 3 as a public release on September 8, 2026.
Why it matters: Xen hypervisor operators and those managing virtualized x86 environments with PCI device assignment must evaluate and patch this memory leak to prevent resource exhaustion and potential denial of service conditions.
- Source published
- First seen by Cybersecurity Tracker