CVE-2019-20054: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.

Affected products

• Linux Linux Kernel: before 5.0.6 (fixed in 5.0.6)
• Netapp 8300 Firmware: affected versions not specified
• Netapp 8700 Firmware: affected versions not specified
• Netapp a400 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, up to and including 11.70.2
• Netapp Fas/aff Baseboard Management Controller: affected versions not specified
• Netapp h610s Firmware: affected versions not specified
• Netapp Solidfire & Hci Management Node: affected versions not specified
• Netapp Solidfire Baseboard Management Controller: affected versions not specified
• Netapp Steelstore Cloud Integrated Storage: affected versions not specified

Published 2019-12-28. Last modified 2026-06-17.