CVE-2018-10878: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bounds write and a denial of service or unspecified other impact is possible by mounting and operating a crafted ext4 filesystem image.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only
• Debian Debian Linux: version 8.0 only
• Linux Linux Kernel: before 3.16.58 (fixed in 3.16.58); from 3.17, before 3.18.124 (fixed in 3.18.124); from 3.19, before 4.4.140 (fixed in 4.4.140); from 4.5, before 4.9.112 (fixed in 4.9.112); from 4.10, before 4.14.55 (fixed in 4.14.55); from 4.15, before 4.17.6 (fixed in 4.17.6)
• Red Hat Enterprise Linux Desktop: version 7.0 only
• Red Hat Enterprise Linux Server: version 7.0 only
• Red Hat Enterprise Linux Workstation: version 7.0 only

Published 2018-07-26. Last modified 2026-06-17.