---
cve: "CVE-2026-64226"
severity: "HIGH"
cvss: 7.8
epss: "13%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-07-24 16:16:51"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T03:54:27+02:00"
---

# CVE-2026-64226

> 7.8 HIGH

## Beschreibung

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

sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path

In scx_root_enable_workfn(), put_task_struct(p) is called before scx_error()
dereferences p->comm and p->pid. If the iterator's reference is the last
drop, the task is freed synchronously and the deref becomes a UAF.

Move put_task_struct() past scx_error().

## 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 ≥ 6.12.92
- Kernel ≥ 6.18.34
- Kernel ≥ 7.0.11

## Referenzen

- <https://git.kernel.org/stable/c/cf396941901858b0de426cdcd3974eea6a02c98c>
- <https://git.kernel.org/stable/c/45c7c4e3db8b700307313c035ea08be829a7f21b>
- <https://git.kernel.org/stable/c/57e19ba3f58a67eb924022a5a60b67fd08e5cbbd>
- <https://git.kernel.org/stable/c/9a415cc53711f2238e0f0ca8a6bcc796c003b127>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64226) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_