---
cve: "CVE-2026-48914"
severity: "MEDIUM"
cvss: 6.7
epss: "16%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-06-12 10:16:22"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T05:57:45+02:00"
---

# CVE-2026-48914

> 6.7 MEDIUM

## Beschreibung

A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Keine | good |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:39311>
- <https://access.redhat.com/security/cve/CVE-2026-48914>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2488283>
- <https://lore.kernel.org/qemu-devel/20260526154957.1741622-1-stefanha@redhat.com/>
- <https://access.redhat.com/errata/RHSA-2026:58571>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-48914) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_