---
cve: "CVE-2025-58142"
severity: "CRITICAL"
cvss: 9.8
epss: "0.5%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2025-09-11 14:15:42"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-10T13:00:35+02:00"
---

# CVE-2025-58142

> 9.8 CRITICAL

## Beschreibung

[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]

There are multiple issues related to the handling and accessing of guest
memory pages in the viridian code:

 1. A NULL pointer dereference in the updating of the reference TSC area.
    This is CVE-2025-27466.

 2. A NULL pointer dereference by assuming the SIM page is mapped when
    a synthetic timer message has to be delivered.  This is
    CVE-2025-58142.

 3. A race in the mapping of the reference TSC page, where a guest can
    get Xen to free a page while still present in the guest physical to
    machine (p2m) page tables.  This is CVE-2025-58143.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-395** — Use of NullPointerException Catch to Detect NULL Pointer Dereference
  Catching NullPointerException should not be used as an alternative to programmatic checks to prevent dereferencing a null pointer.

## BSI-Hinweise (deutsch)

- [Xen: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2025-2007) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen in Xen ausnutzenEin Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um einen Denial-of-Service-Angriff durchzuführen, Informationen offenzulegen oder Berechtigungen zu erweitern.

## Referenzen

- <https://xenbits.xenproject.org/xsa/advisory-472.html>
- <http://www.openwall.com/lists/oss-security/2025/09/09/1>
- <http://xenbits.xen.org/xsa/advisory-472.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2025-58142/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_