CVE-2026-48914 MEDIUM

CVE-2026-48914: Qemu-kvm: heap buffer overflow in virtio-blk scsi request handling

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-122
Published June 12, 2026
Last update June 15, 2026

CVSS base score

6.7/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 15, 2026 Record updated