CVE-2020-10757: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 20.04 only
• Debian Debian Linux: version 8.0 only
• Fedoraproject Fedora: version 31 only
• Linux Linux Kernel: from 4.5, before 4.9.227 (fixed in 4.9.227); from 4.10, before 4.14.184 (fixed in 4.14.184); from 4.15, before 4.19.127 (fixed in 4.19.127); from 4.20, before 5.4.45 (fixed in 5.4.45); from 5.5, before 5.6.17 (fixed in 5.6.17); from 5.7, before 5.7.1 (fixed in 5.7.1)
• Netapp Active Iq Unified Manager: affected versions not specified
• Netapp Cloud Backup: affected versions not specified
• Netapp Steelstore Cloud Integrated Storage: affected versions not specified
• Opensuse Leap: version 15.1 only
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only
• Red Hat Enterprise Mrg: version 2.0 only

Published 2020-06-09. Last modified 2026-06-17.