---
cve: "CVE-2023-39189"
severity: "MEDIUM"
cvss: 5.1
epss: "41%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2023-10-09 18:15:10"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-15T07:45:52+02:00"
---

# CVE-2023-39189

> 5.1 MEDIUM

## Beschreibung

A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnl_osf_add_callback function did not validate the user mode controlled opt_num field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/errata/RHSA-2024:2394>
- <https://access.redhat.com/errata/RHSA-2024:2950>
- <https://access.redhat.com/errata/RHSA-2024:3138>
- <https://access.redhat.com/security/cve/CVE-2023-39189>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2226777>
- <https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-39189) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_