---
cve: "CVE-2026-90045"
severity: "HIGH"
cvss: 7.8
epss: "25.4%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-09-16 11:17:17"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T00:57:24+02:00"
---

# CVE-2026-90045

> 7.8 HIGH

## Beschreibung

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

USB: gadget: ffs: fix mm lifetime handling

io_data stores a pointer to the submitting task's mm_struct,
but does not currently hold a reference to it while async
requests are pending.

This can result in a use-after-free if the task exits before
completion handling finishes.

Take a reference with mmgrab() when queuing the read request
and release it with mmdrop() on request completion.

## 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 ≥ 6.18.51
- Kernel ≥ 7.2.5

## Referenzen

- <https://git.kernel.org/stable/c/f3d31484b3f26d63c09e5569ebfaa1079a17f171>
- <https://git.kernel.org/stable/c/7411de0ce3b45286de1de82526795658ea6eacb0>
- <https://git.kernel.org/stable/c/5eb5c72c72fef76cb765ef1669b62b6a3ba1bfc8>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-90045) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_