---
cve: "CVE-2026-90425"
severity: "HIGH"
cvss: 8.8
epss: "0.1%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-09-17 17:17:47"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T12:21:39+02:00"
---

# CVE-2026-90425

> 8.8 HIGH

## Beschreibung

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

iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID

tegra241_vintf_init_vsid() maps a guest vSID to a single physical Stream ID
taken from master->streams[0], and only warns when the device does not have
exactly one stream. A device with several streams gets only its first one
mapped, so a guest vSID invalidation cannot reach the others' ATC and IOTLB
entries; a device with none makes master->streams a ZERO_SIZE_PTR, read out
of bounds.

Reject the mapping with -EOPNOTSUPP if master->num_streams is not one.

## CVSS-Vektor

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

## Patch verfügbar (OSV)

- Kernel ≥ 6.18.52
- Kernel ≥ 7.2.6

## Referenzen

- <https://git.kernel.org/stable/c/9b37afb2d34d99ec4f8db28134181b5a8ec9a4a5>
- <https://git.kernel.org/stable/c/0b139ec4641c7d4163d8e345c26cc630e24fa43b>
- <https://git.kernel.org/stable/c/fb292bfc9be936dade7eef7ec5762de1201983d8>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-90425) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_