Buffer overflow in Xen
CVE-2025-58150
Shadow mode tracing code uses a set of per-CPU variables to avoid cumbersome parameter passing. Some of these variables are written to with guest controlled data, of guest controllable size. That size can be larger than the variable, and bounding of the writes was missing.
Vulnerability class: Buffer Overflow
EPSS: 0.001 (2.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Xen — versions consult Xen advisory XSA-477
Weakness classification (CWE)
References
- security@xen.org (Patch, Mitigation, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Mitigation, Patch, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-58150?
- CVE-2025-58150 is a high-severity vulnerability in Xen, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-01-28.
- How severe is CVE-2025-58150?
- High severity. CVSS v3 base score is 8.8 out of 10.