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High · 8.8 CVE-2022-49934 EUVD-2022-55194GHSA-w75g-vp3j-wh29

wifi: mac80211: Fix UAF in ieee80211_scan_rx()

Published Jun 18, 2025 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: Fix UAF in ieee80211_scan_rx()

ieee80211_scan_rx() tries to access scan_req->flags after a
null check, but a UAF is observed when the scan is completed
and __ieee80211_scan_completed() executes, which then calls
cfg80211_scan_done() leading to the freeing of scan_req.

Since scan_req is rcu_dereference()'d, prevent the racing in
__ieee80211_scan_completed() by ensuring that from mac80211's
POV it is no longer accessed from an RCU read critical section
before we call cfg80211_scan_done().

Affected products

VendorProductAffectedFixed
Linux Linux 3.19 4.9.330

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 5.19.11-1 —
Debian 13 linux 5.19.11-1 —
Debian 12 linux 5.19.11-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-riscv +2 No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-57.63 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1027.31 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1030.37 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1030.37.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1026.33 —
Ubuntu 22.04 LTS linux-gke 5.15.0-1024.29 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1012.16 —
Ubuntu 22.04 LTS linux-ibm 5.15.0-1022.25 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1023.28 —
Ubuntu 22.04 LTS linux-kvm 5.15.0-1025.30 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1015.15 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1026.32 —
Ubuntu 22.04 LTS linux-raspi 5.15.0-1022.24 —
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-136.153 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1093.101 —
Ubuntu 20.04 LTS linux-aws-5.15 +1 5.15.0-1027.31~20.04.1 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1100.106 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1030.37~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1054.60 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1097.106 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1027.34~20.04.1 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 5.15.0-57.63~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1041.46 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1023.28~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1010.12 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1083.89 —
Ubuntu 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-58.64~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1091.100 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1027.33~20.04.1 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1078.89 —
Ubuntu 18.04 LTS linux 4.15.0-204.215 —
Ubuntu 18.04 LTS linux-aws 4.15.0-1150.163 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1093.102~18.04.2 —
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1161.176 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1100.106~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1145.161 —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1097.106~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-136.153~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1041.46~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1135.140 —
Ubuntu 18.04 LTS linux-oracle 4.15.0-1114.125 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1091.100~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1078.89~18.04.1 —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1029.32 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1093.101+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1100.106+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1069.78 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1097.106+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2089.95 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2070.76 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1107.118 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2054.59 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro 16.04 LTS linux +2 No fix yet —
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1151.164~16.04.1 —
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1162.177~16.04.1 —
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1146.162~16.04.1 —
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-206.217~16.04.1 —
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1115.126~16.04.1 —
Ubuntu Pro 14.04 LTS linux-aws +1 No fix yet —
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1162.177~14.04.1 —

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.0.0-284.11.1.el9_2 RHSA-2023:2458
RHEL 9 perf +48 5.14.0-284.11.1.el9_2 RHSA-2023:2458
RHEL 8 perf +26 4.18.0-477.10.1.el8_8 RHSA-2023:2951

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.113.1.150500.6.53.1 SUSE-SU-2025:02264-1
SLES 15 SP4 kernel-64kb +3 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLES 15 SP4 kernel-docs +2 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SLES 15 SP3 kernel-64kb +6 5.3.18-150300.59.211.1 SUSE-SU-2025:02308-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.211.1.150300.18.126.1 SUSE-SU-2025:02308-1
SLES 15 SP3 kernel-obs-build 5.3.18-150300.59.212.1 SUSE-SU-2025:02308-1
SLES 12 SP5 kernel-syms +2 4.12.14-122.269.1 SUSE-SU-2025:02846-1
Show 16 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.113.1.150500.6.53.1 SUSE-SU-2025:02264-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLES for SAP 15 SP4 kernel-default +1 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLES for SAP 15 SP4 kernel-docs +2 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.211.1.150300.18.126.1 SUSE-SU-2025:02308-1
SLES for SAP 15 SP3 kernel-docs +4 5.3.18-150300.59.211.1 SUSE-SU-2025:02308-1
SLES for SAP 15 SP3 kernel-obs-build 5.3.18-150300.59.212.1 SUSE-SU-2025:02308-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.113.1.150500.6.53.1 SUSE-SU-2025:02264-1
SLE Micro 5.5 kernel-rt 5.14.21-150500.13.100.2 SUSE-SU-2025:02321-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLE Micro 5.5 kernel-source-rt 5.14.21-150500.13.100.1 SUSE-SU-2025:02321-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.124.1 SUSE-SU-2025:02322-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.124.1 SUSE-SU-2025:02322-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.211.1 SUSE-SU-2025:02308-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.211.1.150300.18.126.1 SUSE-SU-2025:02308-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.214.1 SUSE-SU-2025:02320-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.211.1 SUSE-SU-2025:02308-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.211.1.150300.18.126.1 SUSE-SU-2025:02308-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.214.1 SUSE-SU-2025:02320-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_28 1-150500.11.3.1 SUSE-SU-2025:02264-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.211.1 SUSE-SU-2025:02308-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_59 1-150300.7.3.1 SUSE-SU-2025:02308-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.269.1 SUSE-SU-2025:02846-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_71 1-8.3.1 SUSE-SU-2025:02846-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.113.1.150500.6.53.1 SUSE-SU-2025:02264-1
SLE HPC 15 SP4 kernel-64kb +2 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLE HPC 15 SP4 kernel-docs +2 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SUSE Manager Server 4.3 kernel-default +1 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SUSE Manager Server 4.3 kernel-syms +1 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SUSE Manager Proxy 4.3 kernel-default 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SUSE Manager Proxy 4.3 kernel-syms +1 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SUSE Enterprise Storage 7.1 kernel-64kb +5 5.3.18-150300.59.211.1 SUSE-SU-2025:02308-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.211.1.150300.18.126.1 SUSE-SU-2025:02308-1
SUSE Enterprise Storage 7.1 kernel-obs-build 5.3.18-150300.59.212.1 SUSE-SU-2025:02308-1

Advisories 10

References