---
cve: "CVE-2026-92489"
severity: "CRITICAL"
cvss: 9.8
epss: "0.5%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-09-17 17:17:51"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T22:17:26+02:00"
---

# CVE-2026-92489

> 9.8 CRITICAL

## Beschreibung

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

xfrm: Fix skb double-free in xfrm_dev_direct_output()

A return value other than 1 from local_out() means that the skb has been
consumed or its ownership was transferred. xfrm_dev_direct_output()
nevertheless frees the skb on this path, causing a double-free when
netfilter drops the packet and invalidating any other owner.

Return the local_out() result directly, matching the ownership handling
in xfrm_output_resume().

## 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 ≥ 6.6.157
- Kernel ≥ 6.12.110
- Kernel ≥ 6.18.52
- Kernel ≥ 7.2.6

## Referenzen

- <https://git.kernel.org/stable/c/621871b696b108026bf4b44ed4085ffa2102f417>
- <https://git.kernel.org/stable/c/bc9297796bfdcc8d9609236e54519a4f38737aac>
- <https://git.kernel.org/stable/c/02deb637e965950148752a304dd1471212dd6470>
- <https://git.kernel.org/stable/c/56a347950e661c1a7f8f31c43a2ea53c2323b6f4>
- <https://git.kernel.org/stable/c/2aed51fc58d9ce450e2c116efb956160fd06fa02>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-92489) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_