CVE-2022-1184: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel’s filesystem sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 20.04 only
• Debian Debian Linux: version 10.0 only; version 11.0 only
• Linux Linux Kernel: after 2.6.12, before 4.9.138 (fixed in 4.9.138); after 4.14, before 4.14.283 (fixed in 4.14.283); after 4.19, before 4.19.247 (fixed in 4.19.247); after 5.4, before 5.4.198 (fixed in 5.4.198); after 5.10, before 5.10.121 (fixed in 5.10.121); after 5.15, before 5.15.46 (fixed in 5.15.46); …
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2022-08-29. Last modified 2026-06-17.