CVE-2017-18079: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

drivers/input/serio/i8042.c in the Linux kernel before 4.12.4 allows attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact because the port->exists value can change after it is validated.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only
• Linux Linux Kernel: before 3.2.94 (fixed in 3.2.94); from 3.3, before 3.16.49 (fixed in 3.16.49); from 3.17, before 3.18.63 (fixed in 3.18.63); from 3.19, before 4.1.44 (fixed in 4.1.44); from 4.2, before 4.4.79 (fixed in 4.4.79); from 4.5, before 4.9.40 (fixed in 4.9.40); …

Published 2018-01-29. Last modified 2026-06-17.