Cyber Resilience

CVE-2021-3659

Medium

Published: 22 August 2022

Published
22 August 2022
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0012 30.9th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-3659 is a medium-severity Unchecked Return Value (CWE-252) vulnerability in Redhat Enterprise Linux. Its CVSS base score is 5.5 (Medium).

Operationally, ranked at the 30.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

vulnerability is to system availability.

CWE(s)
CWE-252CWE-476

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

linux
linux kernel
≤ 5.12
fedoraproject
fedora
34
redhat
enterprise linux
7.0, 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
redhat
enterprise linux for real time for nfv tus
8.6
redhat
enterprise linux for real time tus
8.6
+5 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References