CVE-2018-17958: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 6.3% chance of exploitation in the next 30 days.

Qemu has a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used.

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 3.0.1
• Red Hat Virtualization: version 4.0 only
• Red Hat Virtualization Manager: version 4.3 only

Published 2018-10-09. Last modified 2026-06-17.