CVE-2022-42721

Name: CVE-2022-42721
Creator: NVD / NIST
Published: 2022-10-14T00:15:09.587+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2022-42721 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A list management bug in BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to corrupt a linked list and, in turn, potentially execute code.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

A list management bug in BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to corrupt a linked list and, in turn, potentially execute code.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.57%

42.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 5.1, < 5.19.16
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36
Fedoraproject	Fedora	37
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1.htmlThird Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2022/10/13/5Exploit, Mailing List, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1204060Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=bcca852027e5878aec911a347407ecc88d6fff7fMailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/
https://security.netapp.com/advisory/ntap-20230203-0008/
https://www.debian.org/security/2022/dsa-5257Third Party Advisory
http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1.htmlThird Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2022/10/13/5Exploit, Mailing List, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1204060Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=bcca852027e5878aec911a347407ecc88d6fff7fMailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/
https://security.netapp.com/advisory/ntap-20230203-0008/
https://www.debian.org/security/2022/dsa-5257Third Party Advisory

Timeline

Published: Oct 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-42721?

How severe is CVE-2022-42721?

CVE-2022-42721 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2022-42721?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-42721?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST