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CVE-2026-46166

wifi: mac80211: use safe list iteration in radar detect work

HIGH
8.8
CVSS Score
Published: May 28, 2026 at 09:36 AM UTC
Updated: October 19, 2026 at 08:18 PM UTC
2 products affected across 2 vendorsLinux KernelEnterprise Linux

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Severity
HIGH8.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.12 ≤ v < 6.12.886.13 ≤ v < 6.18.306.19 ≤ v < 7.0.77.17.1 rc17.1 rc2bca8bc0399ac2efd56e6adbed0307e10125a556c
Vendor states this is fixed in 120149fb3ebcf674832ca3cafd32bedcdb686dde (fixed)
Vendor states this is fixed in 7577a4b8a10fab45a6ee2045ea038a5adadbb585 (fixed)
Vendor states this is fixed in 887ece6c23b49d02a6678e7a8d5ad213d75883ce (fixed)
Vendor states this is fixed in ac8eb3e18f41e2cc8492cc1d358bcb786c850270 (fixed)
Vendor states this is fixed in 6.12 (unaffected)
Vendor states this is fixed in 6.12.88 (unaffected)
Vendor states this is fixed in 6.18.30 (unaffected)
Vendor states this is fixed in 7.0.7 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)
Enterprise Linux· Red Hatrpm
60%
9
Vendor states this is fixed in 0:5.14.0-570.123.1.el9_6 (unaffected)
Vendor states this is fixed in 0:5.14.0-687.17.1.el9_8 (unaffected)
Vendor states this is fixed in 0:6.12.0-211.26.1.el10_2 (unaffected)
Vendor states this is fixed in 0:6.12.0-55.84.1.el10_0 (unaffected)
Vendor states this is fixed in 6 (unaffected)
Vendor states this is fixed in 7 (unaffected)
Vendor states this is fixed in 8 (unaffected)

References (11)

Patch
Source: cverecord
https://git.kernel.org/stable/c/887ece6c23b49d02a6678e7a8d5ad213d75883ce
Patch
Source: cverecord
https://git.kernel.org/stable/c/7577a4b8a10fab45a6ee2045ea038a5adadbb585
Patch
Source: cverecord
https://git.kernel.org/stable/c/120149fb3ebcf674832ca3cafd32bedcdb686dde
Patch
Source: cverecord
https://git.kernel.org/stable/c/ac8eb3e18f41e2cc8492cc1d358bcb786c850270
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:27288
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:27708
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:27789
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:33215

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416CWE-825

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