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Vulnerability record · CVE-2026-46166 · published 28 May 2026

CVE-2026-46166: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

8.8 CVSS 3.1 High EPSS 0.29% · top 81.0% CWE-416 · Use after freeCWE-825 · CWE-825
8.8CVSS 3.1 base score
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
11References
15 Jul 2026Last modified by NVD

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 Patch
https://access.redhat.com/errata/RHSA-2026:27288
https://access.redhat.com/errata/RHSA-2026:27708
https://access.redhat.com/errata/RHSA-2026:27789
https://access.redhat.com/errata/RHSA-2026:33215
https://access.redhat.com/security/cve/CVE-2026-46166
https://bugzilla.redhat.com/show_bug.cgi?id=2482645
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46166.json

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Source: NIST National Vulnerability Database (record CVE-2026-46166), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.