CVE-2018-1068: Canonical Ubuntu Linux

Medium severity, CVSS 6.7. EPSS: 0.4% chance of exploitation in the next 30 days.

A flaw was found in the Linux 4.x kernel's implementation of 32-bit syscall interface for bridging. This allowed a privileged user to arbitrarily write to a limited range of kernel memory.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 17.10 only
• Debian Debian Linux: version 7.0 only; version 8.0 only; version 9.0 only
• Linux Linux Kernel: before 3.2.102 (fixed in 3.2.102); from 3.3, before 3.16.57 (fixed in 3.16.57); from 3.17, before 3.18.100 (fixed in 3.18.100); from 3.19, before 4.1.51 (fixed in 4.1.51); from 4.2, before 4.4.122 (fixed in 4.4.122); from 4.5, before 4.9.88 (fixed in 4.9.88); …
• Red Hat Enterprise Linux Desktop: version 7.0 only
• Red Hat Enterprise Linux Server: version 7.0 only
• Red Hat Enterprise Linux Server Aus: version 7.6 only
• Red Hat Enterprise Linux Server Eus: version 7.5 only; version 7.6 only
• Red Hat Enterprise Linux Server Tus: version 7.6 only
• Red Hat Enterprise Linux Workstation: version 7.0 only
• Red Hat Virtualization Host: version 4.0 only

Published 2018-03-16. Last modified 2026-06-17.