---
cve: "CVE-2023-42752"
severity: "MEDIUM"
cvss: 5.5
epss: "26%"
vendor: "Linux"
kev: false
exploited: false
published: "2023-10-13 02:15:09"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T09:21:39+02:00"
---

# CVE-2023-42752

> 5.5 MEDIUM · 🧪 PoC

## Beschreibung

An integer overflow flaw was found in the Linux kernel. This issue leads to the kernel allocating `skb_shared_info` in the userspace, which is exploitable in systems without SMAP protection since `skb_shared_info` contains references to function pointers.

## CVSS-Vektor

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

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

## Referenzen

- <http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html>
- <https://access.redhat.com/security/cve/CVE-2023-42752>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2239828>
- <https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=915d975b2ffa>
- <https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=c3b704d4a4a2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-42752) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_