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

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Summary

CVECVE-2026-46166
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:32 UTC
Updated2026-05-30 11:17:24 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.000180000 probability, percentile 0.049190000 (date 2026-05-29)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected bca8bc0399ac2efd56e6adbed0307e10125a556c 887ece6c23b49d02a6678e7a8d5ad213d75883ce git Not specified
CNA Linux Linux affected bca8bc0399ac2efd56e6adbed0307e10125a556c 7577a4b8a10fab45a6ee2045ea038a5adadbb585 git Not specified
CNA Linux Linux affected bca8bc0399ac2efd56e6adbed0307e10125a556c 120149fb3ebcf674832ca3cafd32bedcdb686dde git Not specified
CNA Linux Linux affected bca8bc0399ac2efd56e6adbed0307e10125a556c ac8eb3e18f41e2cc8492cc1d358bcb786c850270 git Not specified
CNA Linux Linux affected 6.12 Not specified
CNA Linux Linux unaffected 6.12 semver Not specified
CNA Linux Linux unaffected 6.12.88 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.30 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.7 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ac8eb3e18f41e2cc8492cc1d358bcb786c850270 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7577a4b8a10fab45a6ee2045ea038a5adadbb585 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/120149fb3ebcf674832ca3cafd32bedcdb686dde 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/887ece6c23b49d02a6678e7a8d5ad213d75883ce 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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