CVE-2021-3659

MEDIUM

Linux Kernel < 5.12 - NULL Pointer Dereference

Title source: rule

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)

[Third Party Advisory] https://access.redhat.com/security/cve/CVE-2021-3659

[Issue Tracking, Patch, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=1975949

[Patch, Vendor Advisory] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8

Scores

CVSS v3 5.5

EPSS 0.0002

EPSS Percentile 5.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-252 CWE-476

Status published

Affected Products (16)

linux/linux_kernel < 5.12

fedoraproject/fedora

redhat/enterprise_linux

redhat/enterprise_linux_for_ibm_z_systems

redhat/enterprise_linux_for_ibm_z_systems_eus

redhat/enterprise_linux_for_power_little_endian_eus

redhat/enterprise_linux_for_real_time

redhat/enterprise_linux_for_real_time_for_nfv

redhat/enterprise_linux_for_real_time_for_nfv_tus

redhat/enterprise_linux_for_real_time_tus

redhat/enterprise_linux_server_aus

redhat/enterprise_linux_server_eus

redhat/enterprise_linux_server_tus

redhat/codeready_linux_builder

... and 1 more

Timeline

Published Aug 22, 2022

Tracked Since Feb 18, 2026