Event Channel Management Flaw in Xen Hypervisor by Xen Project
CVE-2026-62432

Currently unrated

Key Information:

Vendor: Xen Project
Status: Xen Project
Vendor: CVE Published:; 28 July 2026

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What is CVE-2026-62432?

The Xen Hypervisor contains a vulnerability in its event channel management system, specifically within the EVTCHNOP_expand_array hypercall. This flaw permits a race condition with the EVTCHNOP_reset hypercall, which may lead to operations that attempt to dereference a NULL pointer due to improper locking mechanisms. If exploited, this vulnerability could disrupt normal operations of the hypervisor, potentially impacting the stability and security of virtual environments. Immediate remediation actions are recommended to mitigate associated risks.

Affected Version(s)

Xen consult Xen advisory XSA-505

References

https://xenbits.xenproject.org/xsa/advisory-505.html

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Timeline

Vulnerability published
Jul 28, 2026
Vulnerability Reserved
Jul 14, 2026

CVE-2026-62432 Data

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