CVE-2026-46166: wifi: mac80211: use safe list iteration in radar detect work
Published May 28, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: use safe list iteration in radar detect work
The call to ieee80211dfscaccancel can cause the iterated chanctx to be freed and removed from the list. Guard against this to avoid a slab-use-after-free error.
Affected Software
6 affected components
Linux Mac80211
Linux Linux kernel>=6.12<6.12.88
Linux Linux kernel>=6.13<6.18.30
Linux Linux kernel>=6.19<7.0.7
Linux Linux kernel=7.1-rc1
Linux Linux kernel=7.1-rc2
Event History
May 28, 2026
CVE Published
via MITRE·09:36 AM
Data Sourced
via MITRE·09:36 AM
DescriptionSeverity
Data Sourced
via NVD·10:16 AM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via Red Hat·11:07 AM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-46166?
The severity of CVE-2026-46166 is high, with a CVSS score of 8.8.
2
What type of vulnerability is CVE-2026-46166?
CVE-2026-46166 is categorized as a Use After Free vulnerability.
3
How do I fix CVE-2026-46166?
To fix CVE-2026-46166, update the Linux kernel to the latest version that addresses this vulnerability.
4
What impact does CVE-2026-46166 have on systems?
CVE-2026-46166 can potentially lead to a slab-use-after-free error, which may compromise system stability.
5
Which software is affected by CVE-2026-46166?
CVE-2026-46166 affects the Linux Mac80211 subsystem.