https://seclists.org/oss-sec/2026/q2/248: Xen Security Advisory 486 v2 (CVE-2026-23558) - grant table v2 race in status page mapping
Published Apr 28, 2026
·Updated
Affected Software
1 affected component
Xen Project Xen>=4.0
Frequently Asked Questions
1
What is the severity of CVE-2026-23558?
The severity of CVE-2026-23558 is considered high due to the potential for a race condition in the grant table v2.
2
How do I fix CVE-2026-23558?
To fix CVE-2026-23558, apply the latest patches provided by the Xen Project that address the race condition in status page mapping.
3
What impact does CVE-2026-23558 have on my system?
CVE-2026-23558 can lead to unauthorized access or modification of memory, potentially compromising the integrity of virtual machines.
4
What versions of Xen are affected by CVE-2026-23558?
CVE-2026-23558 affects multiple versions of the Xen Project, and users should check their specific version for vulnerability.
5
Is there a workaround for CVE-2026-23558?
While the recommended solution is to apply patches, temporarily isolating affected virtual machines may reduce risk until a fix is implemented.