CVE-2019-11833: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 0.6% chance of exploitation in the next 30 days.

fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 19.04 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Fedoraproject Fedora: version 29 only
• Linux Linux Kernel: up to and including 5.1.2
• Red Hat Enterprise Linux: version 8.0 only
• Red Hat Enterprise Linux Desktop: version 7.0 only
• Red Hat Enterprise Linux Eus: version 8.1 only; version 8.2 only; version 8.4 only; version 8.6 only
• Red Hat Enterprise Linux For Real Time: version 7 only; version 8.0 only
• Red Hat Enterprise Linux For Real Time For Nfv: version 7 only; version 8.0 only
• Red Hat Enterprise Linux For Real Time For Nfv Tus: version 8.2 only; version 8.4 only; version 8.6 only
• Red Hat Enterprise Linux For Real Time Tus: version 8.2 only; version 8.4 only; version 8.6 only
• Red Hat Enterprise Linux Server: version 7.0 only
• Red Hat Enterprise Linux Server Aus: version 8.2 only; version 8.4 only; version 8.6 only
• Red Hat Enterprise Linux Server Tus: version 8.2 only; version 8.4 only; version 8.6 only
• Red Hat Enterprise Linux Workstation: version 7.0 only

Published 2019-05-15. Last modified 2026-06-17.