CVE-2021-3659

MediumCVSS 5.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-252 CWE-476

Affected software

Vendor	Product	Versions
n/a	Kernel	Fixed in Kernel 5.12

References

https://access.redhat.com/security/cve/CVE-2021-3659Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1975949Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8Patch, Vendor Advisory
https://access.redhat.com/security/cve/CVE-2021-3659Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1975949Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8Patch, Vendor Advisory

Timeline

Published: Aug 22, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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