Description
An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux kernel | Linux 4.14.98-v7+ | — |
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 ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.3.7-1 | — |
| Debian 13 | linux | 5.3.7-1 | — |
| Debian 12 | linux | 5.3.7-1 | — |
| Debian 9 | linux | 4.9.210-1+deb9u1 | DSA-4698-1 |
| Debian 8 | linux | 3.16.84-1 | DLA-2241-1 |
| Debian 8 | linux-4.9 | 4.9.210-1+deb9u1~deb8u1 | DLA-2242-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-88.88 | USN-4287-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1060.62 | USN-4287-1 |
| Ubuntu 18.04 LTS | linux-aws-5.0 | 5.0.0-1025.28 | USN-4285-1 |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1032.34 | USN-4285-1 |
| Ubuntu 18.04 LTS | linux-gcp | 5.0.0-1031.32 | USN-4285-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge +1 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1052.55 | USN-4287-1 |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1030.31 | USN-4285-1 |
| Ubuntu 18.04 LTS | linux-hwe | 5.3.0-26.28~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-edge | 5.3.0-19.20~18.04.2 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1053.53 | USN-4287-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1073.83 | — |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1039.44 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1033.36 | USN-4287-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | 5.0.0-1011.16 | USN-4285-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1055.59 | USN-4287-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1072.79 | USN-4287-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-174.204 | USN-4286-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1102.113 | USN-4286-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1060.62~16.04.1 | USN-4287-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1071.76 | USN-4287-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1055.59 | USN-4287-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-88.88~16.04.1 | USN-4287-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1066.73 | USN-4286-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1033.36~16.04.1 | USN-4287-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1129.138 | USN-4286-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1133.141 | USN-4286-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2018.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2006.7 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1029.34 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1062.66 | USN-4286-2 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1071.76~14.04.1 | USN-4287-2 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-174.204~14.04.1 | USN-4286-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-193.rt13.51.el8 | RHSA-2020:1567 |
| RHEL 8 | perf +26 | 4.18.0-193.el8 | RHSA-2020:1769 |
| RHEL 7 | kernel-alt | 4.14.0-115.19.1.el7a | RHSA-2020:1493 |
| RHEL 7 | kernel-rt +10 | 3.10.0-1127.19.1.rt56.1116.el7 | RHBA-2020:3527 |
| RHEL 7 | perf +18 | 3.10.0-1127.el7 | RHSA-2020:1493, RHSA-2020:1016 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.116.1 | SUSE-SU-2020:1275-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_24 +2 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_27 +1 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_29 | 4-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_30 | 3-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_31 | 1-4.3.1 | SUSE-SU-2020:1275-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.129.1 | SUSE-SU-2020:1255-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_28 +1 | 9-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_30 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_31 | 7-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_32 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_33 | 4-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_34 | 1-3.3.1 | SUSE-SU-2020:1255-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_33 | 9-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_34 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_35 +1 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_37 | 4-2.1 | SUSE-SU-2020:0868-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.117.1 | SUSE-SU-2020:14442-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.116.1 | SUSE-SU-2020:1275-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_24 +2 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_27 +1 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_29 | 4-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_30 | 3-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_31 | 1-4.3.1 | SUSE-SU-2020:1275-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.129.1 | SUSE-SU-2020:1255-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_28 +1 | 9-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_30 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_31 | 7-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_32 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_33 | 4-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_34 | 1-3.3.1 | SUSE-SU-2020:1255-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_33 | 9-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_34 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_35 +1 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_37 | 4-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_0 | 10-28.2 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_1 | 9-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_2 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_3 +1 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_5 +1 | 5-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_7 +1 | 3-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_11 | 7-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_12 +1 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_14 +1 | 5-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_16 | 3-2.2 | SUSE-SU-2020:0940-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_17 | 3-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_9 +1 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_0 | 3-6.2 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_1 +1 | 3-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_10 +1 | 3-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_4 | 8-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_5 | 7-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_6 +1 | 6-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_8 | 5-2.1 | SUSE-SU-2020:0868-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_9 | 4-2.1 | SUSE-SU-2020:0868-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.116.1 | SUSE-SU-2020:1275-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_31 | 1-4.3.1 | SUSE-SU-2020:1275-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.116.1 | SUSE-SU-2020:1275-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_31 | 1-4.3.1 | SUSE-SU-2020:1275-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.129.1 | SUSE-SU-2020:1255-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_34 | 1-3.3.1 | SUSE-SU-2020:1255-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.116.1 | SUSE-SU-2020:1275-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_31 | 1-4.3.1 | SUSE-SU-2020:1275-1 |
| SUSE Enterprise Storage 5 | kernel-syms +2 | 4.4.180-94.116.1 | SUSE-SU-2020:1275-1 |
| SUSE Enterprise Storage 5 | kgraft-patch-SLE12-SP3_Update_31 | 1-4.3.1 | SUSE-SU-2020:1275-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.43.4.el7uek | ELSA-2020-5866, ELSA-2020-5845 |
| Oracle Linux 7 | perf +5 | 4.14.35-1902.306.2.el7uek | ELSA-2020-5845 |
Advisories 20
- RHSA-2020:1493 Red Hat Security Advisory: kernel-alt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- USN-4287-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- RHSA-2020:1769 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 22, 2026
- RHSA-2020:1567 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- RHBA-2020:3527 Red Hat Bug Fix Advisory: kernel-rt bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:1016 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-4287-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4285-1 linux-aws-5.0, linux-azure, linux-gcp, linux-gke-5.0, linux-oracle-5.0 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4286-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4286-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DSA-4698-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2242-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2241-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2020:0868-1 Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1255-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0940-1 Security update for the Linux Kernel (Live Patch 16 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:14442-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1275-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2020-5866 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 6, 2020
- ELSA-2020-5845 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 11, 2020
References
- USN-4285-1 vendor-advisory
- USN-4287-1 vendor-advisory
- USN-4286-2 vendor-advisory
- USN-4287-2 vendor-advisory
- USN-4286-1 vendor-advisory
- [debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update mailing-list
- [debian-lts-announce] 20200610 [SECURITY] [DLA 2242-1] linux-4.9 security update mailing-list
- [debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update mailing-list
- DSA-4698 vendor-advisory
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://security.netapp.com/advisory/ntap-20200204-0002/
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0900
- https://git.kernel.org/linus/3e493173b7841259a08c5c8e5cbe90adb349da7e
- http://packetstormsecurity.com/files/156455/Kernel-Live-Patch-Security-Notice-LSN-0063-1.html