---
cve: "CVE-2026-53131"
severity: "CRITICAL"
cvss: 9.4
epss: "43%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-06-25 08:38:20"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T10:38:49+02:00"
---

# CVE-2026-53131

> 9.4 CRITICAL

## Beschreibung

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

netfilter: require Ethernet MAC header before using eth_hdr()

`ip6t_eui64`, `xt_mac`, the `bitmap:ip,mac`, `hash:ip,mac`, and
`hash:mac` ipset types, and `nf_log_syslog` access `eth_hdr(skb)`
after either assuming that the skb is associated with an Ethernet
device or checking only that the `ETH_HLEN` bytes at
`skb_mac_header(skb)` lie between `skb->head` and `skb->data`.

Make these paths first verify that the skb is associated with an
Ethernet device, that the MAC header was set, and that it spans at
least a full Ethernet header before accessing `eth_hdr(skb)`.

## CVSS-Vektor

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

## Patch verfügbar (OSV)

- Kernel ≥ 5.15.210
- Kernel ≥ 6.1.176
- Kernel ≥ 6.6.143
- Kernel ≥ 6.12.94
- Kernel ≥ 6.18.36
- Kernel ≥ 7.0.13

## Referenzen

- <https://git.kernel.org/stable/c/4435888e1bf139d2bfe5911643d4217382136743>
- <https://git.kernel.org/stable/c/063f43361e884acd7300790e90194430275d0d0c>
- <https://git.kernel.org/stable/c/726abf97566867f808fec9d8a408eb9698bd570a>
- <https://git.kernel.org/stable/c/367abcacc13a8e2e7624408b7f593bd1e60e49d9>
- <https://git.kernel.org/stable/c/5d634afb8b83b49de562792fd0d047416a43bd4d>
- <https://git.kernel.org/stable/c/cea435ea7e868ea6fdf039bc4f2090c1d829b556>
- <https://git.kernel.org/stable/c/62443dc21114c0bbc476fa62973db89743f2f137>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53131) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_