🛡️ CVE-2026-48914 on Ubuntu — qemu

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Distribution advisory

This page covers CVE-2026-48914 as tracked by Ubuntu, for the package qemu. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality none, integrity low, availability high.

Affected software

UBUNTU-CVE-2026-48914 is recorded against 1 package.

  • qemu

Timeline and source

Published on 12 June 2026 and last revised on 6 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
bugzilla.redhat.com (Report)
access.redhat.com (Report)
lore.kernel.org (Report)

CVE-2026-48914 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-12
Updated 2026-08-11
Modified 2026-08-06
Fix URL N/A

Affected Packages

Software From version Fixed in
qemu — —

Similar Threats

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