CVE-2018-16847: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

An OOB heap buffer r/w access issue was found in the NVM Express Controller emulation in QEMU. It could occur in nvme_cmb_ops routines in nvme device. A guest user/process could use this flaw to crash the QEMU process resulting in DoS or potentially run arbitrary code with privileges of the QEMU process.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• Qemu Qemu: up to and including 3.0.0; version 3.1.0 only

Published 2018-11-02. Last modified 2026-06-17.