wifi: mac80211: use safe list iteration in radar detect work
Published May 28, 2026
8.8
HIGHCVSS 3.1
EPSS 0.29%
Description
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 products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 6.12StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<6.12
- Version 6.12.88StatusunaffectedConstraints<=6.12.*
- Version 6.18.30StatusunaffectedConstraints<=6.18.*
- Version 7.0.7StatusunaffectedConstraints<=7.0.*
- Version 7.1StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
- ≥ 6.12 · < 6.12.88
- ≥ 6.13 · < 6.18.30
- ≥ 6.19 · < 7.0.7
- 7.1
- 7.1
No data.
Red Hat Enterprise Linux 10
kernel-0:6.12.0-211.26.1.el10_2
Fixed · RHSA-2026:27288
Red Hat Enterprise Linux 10.0 Extended Update Support
kernel-0:6.12.0-55.84.1.el10_0
Fixed · RHSA-2026:33215
Red Hat Enterprise Linux 9
kernel-0:5.14.0-687.17.1.el9_8
Fixed · RHSA-2026:27789
Red Hat Enterprise Linux 9
kernel-0:5.14.0-687.17.1.el9_8
Fixed · RHSA-2026:27789
Red Hat Enterprise Linux 9.6 Extended Update Support
kernel-0:5.14.0-570.123.1.el9_6
Fixed · RHSA-2026:27708
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel-0:6.12.0-211.26.1.el10_2 | Fixed | RHSA-2026:27288 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | kernel-0:6.12.0-55.84.1.el10_0 | Fixed | RHSA-2026:33215 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-687.17.1.el9_8 | Fixed | RHSA-2026:27789 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-687.17.1.el9_8 | Fixed | RHSA-2026:27789 |
| Red Hat Enterprise Linux 9.6 Extended Update Support | kernel-0:5.14.0-570.123.1.el9_6 | Fixed | RHSA-2026:27708 |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (15)
- 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 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2482645 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-32793 Advisory
- 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://lore.kernel.org/linux-cve-announce/2026052826-CVE-2026-46166-77a1@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-46166
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46166.json
- https://www.cve.org/CVERecord?id=CVE-2026-46166
Change history (0)
No recorded changes yet.