CVE-2021-3659: Fedoraproject Fedora

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.

Affected products

• Fedoraproject Fedora: version 34 only
• Linux Linux Kernel: before 5.12 (fixed in 5.12)
• Red Hat Codeready Linux Builder: affected versions not specified
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only
• Red Hat Enterprise Linux For IBM Z Systems: version 8.0 only
• Red Hat Enterprise Linux For IBM Z Systems Eus: version 8.6 only
• Red Hat Enterprise Linux For Power Little Endian Eus: version 8.6 only
• Red Hat Enterprise Linux For Real Time: version 8.0 only
• Red Hat Enterprise Linux For Real Time For Nfv: version 8.0 only
• Red Hat Enterprise Linux For Real Time For Nfv Tus: version 8.6 only
• Red Hat Enterprise Linux For Real Time Tus: version 8.6 only
• Red Hat Enterprise Linux Server Aus: version 8.6 only
• Red Hat Enterprise Linux Server Eus: version 8.6 only
• Red Hat Enterprise Linux Server Tus: version 8.6 only
• Red Hat Virtualization Host: version 4.0 only

Published 2022-08-22. Last modified 2026-06-17.