CVE-2019-5108: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 10.1% chance of exploitation in the next 30 days.

An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Linux Linux Kernel: before 5.3 (fixed in 5.3)
• Netapp 8300 Firmware: affected versions not specified
• Netapp 8700 Firmware: affected versions not specified
• Netapp a400 Firmware: affected versions not specified
• Netapp a700s Firmware: affected versions not specified
• Netapp Active Iq Unified Manager: affected versions not specified
• Netapp Cloud Backup: affected versions not specified
• Netapp Data Availability Services: affected versions not specified
• Netapp E-Series Santricity OS Controller: from 11.0.0, up to and including 11.70.1
• Netapp h610s Firmware: affected versions not specified
• Netapp Hci Management Node: affected versions not specified
• Netapp Solidfire: affected versions not specified
• Netapp Steelstore Cloud Integrated Storage: affected versions not specified
• Oracle SD-WAN Edge: version 8.2 only

Published 2019-12-23. Last modified 2026-06-17.