---
cve: "CVE-2026-68461"
severity: "HIGH"
cvss: 7.8
epss: "13%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-08-15 05:51:21"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T04:26:36+02:00"
---

# CVE-2026-68461

> 7.8 HIGH

## Beschreibung

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

device property: initialize the remaining fields of fwnode_handle in fwnode_init()

If a firmware node is allocated on the stack (for instance: temporary
software node whose life-time we control) or on the heap - but using a
non-zeroing allocation function - and initialized using fwnode_init(),
its secondary pointer will contain uninitialized memory which likely
will be neither NULL nor IS_ERR() and so may end up being dereferenced
(for example: in dev_to_swnode()). Set fwnode->secondary to NULL on
initialization. While at it: initialize the remaining fields of struct
fwnode_handle too just to be sure.

[ Fix typo in commit message. - Danilo ]

## CVSS-Vektor

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

## Patch verfügbar (OSV)

- Kernel ≥ 5.15.212
- Kernel ≥ 6.1.178
- Kernel ≥ 6.6.145
- Kernel ≥ 6.12.96
- Kernel ≥ 6.18.39
- Kernel ≥ 7.1.5

## Referenzen

- <https://git.kernel.org/stable/c/0198d579948322cda5178b9672d448375a32f947>
- <https://git.kernel.org/stable/c/173b61c9276c7b3a5fbcc63ae7aafc897fee1e18>
- <https://git.kernel.org/stable/c/f0b4e1cc8ad76baf49d898727eb52e91a4ef0544>
- <https://git.kernel.org/stable/c/c8542b68ba6ef4f61072098893a3f5b71c569b6c>
- <https://git.kernel.org/stable/c/9c86a1f930bb2ddb85f867b4736716e82a4a4683>
- <https://git.kernel.org/stable/c/c81e2af41de6a159837c7129a4fc444ac6e48046>
- <https://git.kernel.org/stable/c/7eba000621fff223dd7bab484d48918c7c77a307>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-68461) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_