https://seclists.org/oss-sec/2026/q3/301: Xen Security Advisory 496 v2 (CVE-2026-42492) - vIRQ event channel binding may bak Xensto
Published Jul 28, 2026
·Updated
Affected Software
1 affected component
Xen Project Xen>=undefined
Frequently Asked Questions
1
What is the severity of CVE-2026-42492?
CVE-2026-42492 is classified as a high-severity vulnerability due to potential security implications for Xenstore.
2
How do I fix CVE-2026-42492?
To fix CVE-2026-42492, users should update to the latest version of the Xen Project software that includes the security patches.
3
What systems are affected by CVE-2026-42492?
CVE-2026-42492 affects systems running the Xen Project hypervisor that utilize vIRQ event channel binding.
4
What are the potential impacts of CVE-2026-42492?
The potential impacts of CVE-2026-42492 include instability in the Xenstore and possible Denial of Service conditions.
5
Is there a workaround for CVE-2026-42492?
Currently, there is no official workaround for CVE-2026-42492, and the recommended action is to apply the provided updates.