CVE-2019-19074: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 4.4% chance of exploitation in the next 30 days.

A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption), aka CID-728c1e2a05e4.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only
• Debian Debian Linux: version 9.0 only
• Linux Linux Kernel: before 4.4.233 (fixed in 4.4.233); from 4.5, before 4.9.233 (fixed in 4.9.233); from 4.10, before 4.14.192 (fixed in 4.14.192); from 4.15, before 4.19.137 (fixed in 4.19.137); from 4.20, before 5.4 (fixed in 5.4)

Published 2019-11-18. Last modified 2026-06-17.