---
cve: "CVE-2023-42753"
severity: "HIGH"
cvss: 7.0
epss: "0.5%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2023-09-25 21:15:15"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T16:57:31+02:00"
---

# CVE-2023-42753

> 7.0 HIGH

## Beschreibung

An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/errata/RHSA-2023:7370>
- <https://access.redhat.com/errata/RHSA-2023:7379>
- <https://access.redhat.com/errata/RHSA-2023:7382>
- <https://access.redhat.com/errata/RHSA-2023:7389>
- <https://access.redhat.com/errata/RHSA-2023:7411>
- <https://access.redhat.com/errata/RHSA-2023:7418>
- <https://access.redhat.com/errata/RHSA-2023:7539>
- <https://access.redhat.com/errata/RHSA-2023:7558>
- <https://access.redhat.com/errata/RHSA-2024:0089>
- <https://access.redhat.com/errata/RHSA-2024:0113>
- <https://access.redhat.com/errata/RHSA-2024:0134>
- <https://access.redhat.com/errata/RHSA-2024:0340>
- <https://access.redhat.com/errata/RHSA-2024:0346>
- <https://access.redhat.com/errata/RHSA-2024:0347>
- <https://access.redhat.com/errata/RHSA-2024:0371>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-42753) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_