CVE-2019-19807: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free caused by erroneous code refactoring, aka CID-e7af6307a8a5. This is related to snd_timer_open and snd_timer_close_locked. The timeri variable was originally intended to be for a newly created timer instance, but was used for a different purpose after refactoring.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 19.10 only
• Linux Linux Kernel: from 4.9.199, before 4.9.201 (fixed in 4.9.201); from 4.14.152, before 4.14.154 (fixed in 4.14.154); from 4.19.82, before 4.19.84 (fixed in 4.19.84); from 5.2, before 5.3.11 (fixed in 5.3.11)

Published 2019-12-15. Last modified 2026-06-17.