https://seclists.org/oss-sec/2026/q3/303: Xen Security Advisory 499 v2 (CVE-2026-62426,CVE-2026-62427) - sysctl and platform-op locks open to abuse
Published Jul 28, 2026
·Updated
Affected Software
1 affected component
Xen Project Xen>=undefined
Frequently Asked Questions
1
What is the severity of CVE-2026-62426 and CVE-2026-62427?
The severity of CVE-2026-62426 and CVE-2026-62427 is classified as high due to potential abuse of sysctl and platform-op locks.
2
How do I fix CVE-2026-62426 and CVE-2026-62427?
To fix CVE-2026-62426 and CVE-2026-62427, apply the patches provided in the Xen Security Advisory XSA-499 version 2.
3
What systems are affected by CVE-2026-62426 and CVE-2026-62427?
CVE-2026-62426 and CVE-2026-62427 affect the Xen Project Xen virtualization software.
4
What is the impact of CVE-2026-62426 and CVE-2026-62427 on system security?
The impact of CVE-2026-62426 and CVE-2026-62427 could lead to unauthorized access and control over critical system operations.
5
Is there a workaround for CVE-2026-62426 and CVE-2026-62427?
Currently, there are no known workarounds for CVE-2026-62426 and CVE-2026-62427; applying the patches is recommended.