CVE-2021-3659

MEDIUM

Linux Kernel < 5.12 - Denial of Service via IEEE 802.15.4 LR-WPAN Connection Close

Title source: llm
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1975949
Third Party Advisory x_refsource_misc
https://access.redhat.com/security/cve/CVE-2021-3659

Scores

CVSS v3 5.5
EPSS 0.0027
EPSS Percentile 17.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-252 CWE-476
Status published
Products (16)
fedoraproject/fedora 34
linux/linux_kernel < 5.12
redhat/codeready_linux_builder
redhat/enterprise_linux 7.0
redhat/enterprise_linux 8.0
redhat/enterprise_linux_for_ibm_z_systems 8.0
redhat/enterprise_linux_for_ibm_z_systems_eus 8.6
redhat/enterprise_linux_for_power_little_endian_eus 8.6
redhat/enterprise_linux_for_real_time 8.0
redhat/enterprise_linux_for_real_time_for_nfv 8.0
... and 6 more
Published Aug 22, 2022
Tracked Since Feb 18, 2026