CVE-2018-7480: Canonical Ubuntu Linux

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

The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel before 4.11 allows local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only
• Debian Debian Linux: version 9.0 only
• Linux Linux Kernel: from 4.1.41, before 4.1.51 (fixed in 4.1.51); from 4.3, before 4.4.123 (fixed in 4.4.123); from 4.5, before 4.9.89 (fixed in 4.9.89); from 4.10, before 4.11 (fixed in 4.11)

Published 2018-02-25. Last modified 2026-06-17.