---
cve: "CVE-2026-80751"
severity: "HIGH"
cvss: 7.8
epss: "30.1%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-09-03 13:06:14"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T00:29:48+02:00"
---

# CVE-2026-80751

> 7.8 HIGH

## Beschreibung

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

pmdomain: mediatek: mfg: initialize prev_o in mtk_mfg_attach_dev()

mtk_mfg_attach_dev() reads prev_o on the first iteration of its loop,
in "if (prev_o && prev_o->freq == o->freq)", before prev_o is assigned
at the end of the loop body. On that first iteration, evaluating prev_o
reads an indeterminate value. If it is non-NULL, the condition
dereferences a stale or invalid pointer, potentially faulting or
incorrectly skipping the first OPP.

Initialize prev_o to NULL. This matches the intent as well: there is no
previous OPP to compare against on the first iteration.

Found with Clang's -Wconditional-uninitialized.

## 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 ≥ 7.1.10

## Referenzen

- <https://git.kernel.org/stable/c/090a95dbe13df9965279b588d97eda134831769c>
- <https://git.kernel.org/stable/c/de4eec0dfde8c0e27f8915bbb244d17ff68f2fb4>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-80751) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_