Review reviewHigh

CVE-2026-46166

Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support

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
8.8
EPSS
0.20%
10.4% percentile
CISA KEV
Not listed
Published
2026.05.28
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.20%
Technical severityCVSS 8.8

Vulnerability overview

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 product and versions

Product
Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support
Affected versions
>= bca8bc0399ac2efd56e6adbed0307e10125a556c < 887ece6c23b49d02a6678e7a8d5ad213d75883ce, >= bca8bc0399ac2efd56e6adbed0307e10125a556c < 7577a4b8a10fab45a6ee2045ea038a5adadbb585, >= bca8bc0399ac2efd56e6adbed0307e10125a556c < 120149fb3ebcf674832ca3cafd32bedcdb686dde, >= bca8bc0399ac2efd56e6adbed0307e10125a556c < ac8eb3e18f41e2cc8492cc1d358bcb786c850270, >= 6.12, >= 6.12 < 6.12.88, >= 6.13 < 6.18.30, >= 6.19 < 7.0.7, 7.1
Fixed versions
6.12.88, 6.18.30, 7.0.7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416, CWE-825