CVE-2019-20096: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 1% chance of exploitation in the next 30 days.

In the Linux kernel before 5.1, there is a memory leak in __feat_register_sp() in net/dccp/feat.c, which may cause denial of service, aka CID-1d3ff0950e2b.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only
• Debian Debian Linux: version 8.0 only
• Linux Linux Kernel: before 5.1 (fixed in 5.1)

Published 2019-12-30. Last modified 2026-06-17.