CVE-2018-10839: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 3.1% chance of exploitation in the next 30 days.

Qemu emulator <= 3.0.0 built with the NE2000 NIC emulation support is vulnerable to an integer overflow, which could lead to buffer overflow issue. It could occur when receiving packets over the network. A user inside guest could use this flaw to crash the Qemu process resulting in DoS.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Qemu Qemu: up to and including 3.0.0

Published 2018-10-16. Last modified 2026-06-17.