CVE-2026-48914

medium

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.

References

https://lore.kernel.org/qemu-devel/[email protected]/

https://bugzilla.redhat.com/show_bug.cgi?id=2488283

https://access.redhat.com/security/cve/CVE-2026-48914

Details

Source: Mitre, NVD

Published: 2026-06-12

Updated: 2026-06-12

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:L/AC:L/Au:M/C:N/I:P/A:C

Severity: Medium

CVSS v3

Base Score: 6.7

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

Severity: Medium

EPSS

EPSS: 0.00011