Description
A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption), aka CID-728c1e2a05e4.
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 | 5.4.6-1 | — |
| Debian 13 | linux | 5.4.6-1 | — |
| Debian 12 | linux | 5.4.6-1 | — |
| Debian 9 | linux | 4.9.240-1 | DLA-2420-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-raspi2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-118.119 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1083.87 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1096.106 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-gcp +11 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1084.95 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1070.73 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1075.76 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1097.107 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1054.58 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1071.75 | USN-4526-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1087.95 | USN-4526-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-190.220 | USN-4527-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1114.127 | USN-4527-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1083.87~16.04.1 | USN-4526-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1096.106~16.04.1 | USN-4526-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1084.95~16.04.1 | USN-4526-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-118.119~16.04.1 | USN-4526-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1080.87 | USN-4527-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1054.58~16.04.1 | USN-4526-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1139.148 | USN-4527-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1143.152 | USN-4527-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 18.04 LTS | linux-aws-fips | 4.15.0-2027.27 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2009.10 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1041.46 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1046.51 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1078.82 | USN-4527-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1096.106~14.04.1 | USN-4526-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-190.220~14.04.1 | USN-4527-1 |
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 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.22.1 | SUSE-SU-2019:3372-1 |
| SLES 15 SP1 | kernel-docs | 4.12.14-197.29.2 | SUSE-SU-2019:3317-1 |
| SLES 15 SP1 | kernel-syms +4 | 4.12.14-197.29.1 | SUSE-SU-2019:3317-1 |
| SLES 15 | kernel-azure +2 | 4.12.14-5.47.1 | SUSE-SU-2019:3289-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.47.1 | SUSE-SU-2019:3381-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.7.1 | SUSE-SU-2020:0093-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.34.1 | SUSE-SU-2019:3316-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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_34 | 1-3.3.1 | SUSE-SU-2020:1255-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.111.1 | SUSE-SU-2020:14354-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.7.1 | SUSE-SU-2020:0093-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.34.1 | SUSE-SU-2019:3316-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
| 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_34 | 1-3.3.1 | SUSE-SU-2020:1255-1 |
| SLE Real Time 12 SP4 | kernel-rt +3 | 4.12.14-8.12.1 | SUSE-SU-2020:0599-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.29.1 | SUSE-SU-2019:3317-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_8 | 1-3.3.1 | SUSE-SU-2019:3317-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.47.1 | SUSE-SU-2019:3381-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_17 | 1-1.3.2 | SUSE-SU-2019:3381-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_1 | 1-8.7.1 | SUSE-SU-2019:3200-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_11 | 1-6.5.1 | SUSE-SU-2019:3371-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.17.1 | SUSE-SU-2020:0613-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
| 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 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
| SUSE Enterprise Storage 5 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SUSE Enterprise Storage 5 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | kernel-docs +8 | 4.12.14-lp151.28.36.1 | openSUSE-SU-2019:2675-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.192-147.314 | 1.0-0.amzn2 | ALAS2-2020-1480 |
| Amazon Linux 2 | perf +8 | 4.14.192-147.314.amzn2 | ALAS2-2020-1480 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-193.el8 | ELSA-2020-1769 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.56.1.el7uek | ELSA-2021-9473, ELSA-2020-5845 |
| Oracle Linux 7 | perf +5 | 4.14.35-1902.306.2.el7uek | ELSA-2020-5845 |
Advisories 24
- 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
- USN-4526-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4527-1 linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DLA-2420-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2020:0599-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:14354-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2675-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3372-1 Security update for the Linux Kernel 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-2019:3316-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3381-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3289-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3371-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3379-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0093-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3317-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0198 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Dec 9, 2025
- SUSE-SU-2020:0613-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:3200-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2020-1480 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 19, 2024
- ELSA-2021-9473 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 8, 2021
- ELSA-2020-5845 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 11, 2020
- ELSA-2020-1769 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 5, 2020
References
- FEDORA-2019-021c968423 vendor-advisory
- FEDORA-2019-34a75d7e61 vendor-advisory
- openSUSE-SU-2019:2675 vendor-advisory
- USN-4527-1 vendor-advisory
- USN-4526-1 vendor-advisory
- [debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update mailing-list
- [debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update mailing-list
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://security.netapp.com/advisory/ntap-20191205-0001/
- https://github.com/torvalds/linux/commit/728c1e2a05e4b5fc52fab3421dce772a806612a2