High severity · published May 28, 2026
CVE-2026-46166
wifi: mac80211: use safe list iteration in radar detect work
8.8
CVSS
0.2%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: use safe list iteration in radar detect work
The call to ieee80211_dfs_cac_cancel can cause the iterated chanctx to
be freed and removed from the list. Guard against this to avoid a
slab-use-after-free error.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
6.12 before 6.12.88; 6.13 before 6.18.30; 6.19 before 7.0.7; 7.1; 7.1 · source: NVD
LI
Linux · Linux
bca8bc0399ac2efd56e6adbed0307e10125a556c before 887ece6c23b49d02a6678e7a8d5ad213d75883ce; bca8bc0399ac2efd56e6adbed0307e10125a556c before 7577a4b8a10fab45a6ee2045ea038a5adadbb585; bca8bc0399ac2efd56e6adbed0307e10125a556c before 120149fb3ebcf674832ca3cafd32bedcdb686dde; bca8bc0399ac2efd56e6adbed0307e10125a556c before ac8eb3e18f41e2cc8492cc1d358bcb786c850270; 6.12 · source: vendor
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 9.6 Extended Update Support · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46166
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46166
Patch
https://git.kernel.org/stable/c/120149fb3ebcf674832ca3cafd32bedcdb686dde
Patch
https://git.kernel.org/stable/c/7577a4b8a10fab45a6ee2045ea038a5adadbb585
Patch
https://git.kernel.org/stable/c/887ece6c23b49d02a6678e7a8d5ad213d75883ce
Patch
https://git.kernel.org/stable/c/ac8eb3e18f41e2cc8492cc1d358bcb786c850270
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:27288
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:27708
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