CVE-2019-13164: Canonical Ubuntu Linux

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

qemu-bridge-helper.c in QEMU 3.1 and 4.0.0 does not ensure that a network interface name (obtained from bridge.conf or a --br=bridge option) is limited to the IFNAMSIZ size, which can lead to an ACL bypass.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 19.04 only; version 19.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only; version 10.0 only
• Opensuse Leap: version 15.0 only; version 15.1 only
• Qemu Qemu: version 3.1 only; version 4.0.0 only

Published 2019-07-03. Last modified 2026-06-17.