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Mageia 9 xen Important Buffer Overrun Fix CVE-2025-58150 2026-0026

mageia
Calendar Grey January 30, 2026
Dist Mageia Esm H88
Updated xen packages for Mageia address significant security issues including buffer overrun and isolation flaws.
MGASA-2026-0026 - Updated xen packages fix security vulnerabilities

Summary

Description: x86: buffer overrun with shadow paging + tracing. (CVE-2025-58150) x86: incomplete IBPB for vCPU isolation. (CVE-2026-23553)

References

- https://bugs.mageia.org/show_bug.cgi?id=35074

- https://www.openwall.com/lists/oss-security/2026/01/27/1

- https://www.openwall.com/lists/oss-security/2026/01/27/3

- https://www.cve.org/CVERecord?id=CVE-2025-58150

- https://www.cve.org/CVERecord?id=CVE-2026-23553

Topics%20covered

Topics Covered

security advisory buffer overrun important xen Mageia incomplete isolation

Resolution

SRPMS

- 9/core/xen-4.17.5-1.git20251028.2.mga9

Severity
important
Lowest
Low
Medium
High
Critical

Publication date: 30 Jan 2026
URL: https://advisories.mageia.org/MGASA-2026-0026.html
Type: security
CVE: CVE-2025-58150, CVE-2026-23553

Topics%20covered

Topics Covered

security advisory buffer overrun important xen Mageia incomplete isolation

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