---
cve: "CVE-2026-31631"
severity: "HIGH"
cvss: 8.2
epss: "39%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-04-24 15:16:42"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T03:28:49+02:00"
---

# CVE-2026-31631

> 8.2 HIGH

## Beschreibung

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()

Fix rxgk_do_verify_authenticator() to check the buffer size before checking
the nonce.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 | Gering | warn |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- Kernel ≥ 6.18.23
- Kernel ≥ 6.19.13

## Referenzen

- <https://git.kernel.org/stable/c/794586789800b16dcbe235452494f4223ac80413>
- <https://git.kernel.org/stable/c/1c4422d8be81718ecb15d79aedff607323085201>
- <https://git.kernel.org/stable/c/f564af387c8c28238f8ebc13314c589d7ba8475d>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-31631) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_