CVE-2020-9383: Canonical Ubuntu Linux

High severity, CVSS 7.1. EPSS: 0.8% chance of exploitation in the next 30 days.

An issue was discovered in the Linux kernel 3.16 through 5.5.6. set_fdc in drivers/block/floppy.c leads to a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it, aka CID-2e90ca68b0d2.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 19.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Linux Linux Kernel: from 3.16, up to and including 5.5.6
• 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 h410c Firmware: affected versions not specified
• Netapp Hci Management Node: affected versions not specified
• Netapp Solidfire: affected versions not specified
• Netapp Solidfire Baseboard Management Controller Firmware: affected versions not specified
• Netapp Steelstore Cloud Integrated Storage: affected versions not specified
• Opensuse Leap: version 15.1 only

Published 2020-02-25. Last modified 2026-06-17.