Vulnerability · Published Jan 28, 2026 · Assigned by XEN
CVE-2025-58150x86: buffer overrun with shadow paging + tracing
High 8.8
In plain English
A high-severity out-of-bounds write in Xen from Xen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.1%top 95.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | xen | 4.18.5-r4 | ALPINE-CVE-2025-58150 |
| Alpine:v3.21 | xen | 4.19.4-r1 | ALPINE-CVE-2025-58150 |
| Alpine:v3.22 | xen | 4.20.2-r1 | ALPINE-CVE-2025-58150 |
| Alpine:v3.23 | xen | 4.20.2-r1 | ALPINE-CVE-2025-58150 |
| Alpine:v3.24 | xen | 4.21.0-r2 | ALPINE-CVE-2025-58150 |
| Debian:12 | xen | 4.17.7-0+deb12u1 | DEBIAN-CVE-2025-58150 |
| Debian:13 | xen | 4.20.2+37-g61ff35323e-0+deb13u1 | DEBIAN-CVE-2025-58150 |
| Debian:14 | xen | 4.20.2+37-g61ff35323e-1 | DEBIAN-CVE-2025-58150 |
| Ubuntu:22.04:LTS | xen | no fix listed | UBUNTU-CVE-2025-58150 |
| Ubuntu:24.04:LTS | xen | no fix listed | UBUNTU-CVE-2025-58150 |
| Ubuntu:25.10 | xen | no fix listed | UBUNTU-CVE-2025-58150 |
| Ubuntu:26.04:LTS | xen | no fix listed | UBUNTU-CVE-2025-58150 |
| Ubuntu:26.10 | xen | no fix listed | UBUNTU-CVE-2025-58150 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H