---
cve: "CVE-2024-49568"
severity: "CRITICAL"
cvss: 9.8
epss: "0.6%"
vendor: "Linux"
kev: false
exploited: false
published: "2025-01-11 13:15:23"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-09T19:30:31+02:00"
---

# CVE-2024-49568

> 9.8 CRITICAL

## Beschreibung

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

net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg

When receiving proposal msg in server, the fields v2_ext_offset/
eid_cnt/ism_gid_cnt in proposal msg are from the remote client
and can not be fully trusted. Especially the field v2_ext_offset,
once exceed the max value, there has the chance to access wrong
address, and crash may happen.

This patch checks the fields v2_ext_offset/eid_cnt/ism_gid_cnt
before using them.

## CNA-Record (Kanon, cvelistV5)

- CNA: **Linux**
- State: PUBLISHED
- Stand: 2026-10-03 10:55:19
- CNA-CVSS: **9.8** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)

## 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 |

## Patch verfügbar (OSV)

- Kernel ≥ 5.10.271
- Kernel ≥ 5.15.222
- Kernel ≥ 6.1.189
- Kernel ≥ 6.6.68
- Kernel ≥ 6.12.7

## BSI-Hinweise (deutsch)

- [Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2025-0047) — _BSI-Einstufung: mittel_
  Ein lokaler Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen und weitere nicht spezifizierte Angriffe zu starten.

## Referenzen

- <https://git.kernel.org/stable/c/9cc0170ae646876aa5de2f0cad3066ce53e86f27>
- <https://git.kernel.org/stable/c/49798283fce4c1a24fb1ba4c7c39127739535571>
- <https://git.kernel.org/stable/c/690b9a8db9460d065785548e43fd6a02d247c1b7>
- <https://git.kernel.org/stable/c/295a92e3df32e72aff0f4bc25c310e349d07ffbf>
- <https://git.kernel.org/stable/c/42f6beb2d5779429417b5f8115a4e3fa695d2a6c>
- <https://git.kernel.org/stable/c/7863c9f3d24ba49dbead7e03dfbe40deb5888fdf>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2024-49568/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_