Description
A use-after-free vulnerability was found in the Linux kernel in drivers/net/hamradio. This flaw allows a local attacker with a user privilege to cause a denial of service (DOS) when the mkiss or sixpack device is detached and reclaim resources early.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | kernel 5.16 rc1 | — |
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 | 5.15.15-1 | — |
| Debian 13 | linux | 5.15.15-1 | — |
| Debian 12 | linux | 5.15.15-1 | — |
| Debian 11 | linux | 5.10.113-1 | DSA-5127-1 |
| Debian 10 | linux | 4.19.249-2 | DSA-5173-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-37.39 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1011.14 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1010.12 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1008.12 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1008.10 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1007.8 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1008.11 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1010.11 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1009.12 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1011.13 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv | 5.15.0-1012.13 | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-122.138 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1081.88 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1086.91 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1008.9~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-fde | 5.4.0-1086.91+cvm1.1 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1042.47 | USN-5539-1 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1084.92 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1078.84 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1049.52 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.15 | 5.15.0-41.44~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1029.33 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1008.11~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1004.6 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1071.76 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-lowlatency-hwe-5.15 | 5.15.0-42.45~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oem-5.14 | 5.14.0-1036.40 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1079.87 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1066.76 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-riscv +22 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-191.202 | USN-5560-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1139.150 | USN-5560-1 |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1081.88~18.04.1 | USN-5514-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1149.164 | USN-5560-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1086.91~18.04.1 | USN-5514-1 |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1051.56 | USN-5560-1 |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1134.150 | USN-5560-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1084.92~18.04.1 | USN-5539-1 |
| Ubuntu 18.04 LTS | linux-gke-5.4 | 5.4.0-1078.84~18.04.1 | USN-5539-1 |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1049.52~18.04.1 | USN-5514-1 |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-122.138~18.04.1 | USN-5514-1 |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1029.33~18.04.1 | USN-5514-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1125.130 | USN-5560-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1104.115 | USN-5560-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1079.87~18.04.1 | USN-5514-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1066.76~18.04.1 | USN-5514-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1117.125 | USN-5560-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1135.145 | USN-5560-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1014.14 | — |
| 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 +1 | 5.4.0-1081.88+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1086.91+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1057.65 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2078.83 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2059.65 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1096.107 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2043.48 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1088.95 | — |
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1114.123~20.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-239.273 | USN-6014-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1155.170 | USN-6001-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1139.150~16.04.1 | USN-5560-2 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1149.164~16.04.1 | USN-5560-2 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1134.150~16.04.2 | USN-5560-2 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-191.202~16.04.1 | USN-5560-2 |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1118.128 | USN-6014-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1104.115~16.04.1 | USN-5560-2 |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1117.123 | USN-6013-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1149.164~14.04.1 | USN-5560-2 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-239.273~14.04.1 | USN-6014-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.63.1 | SUSE-SU-2024:2185-1, SUSE-SU-2022:1183-1 |
| SLES 15 SP3 | kernel-azure +2 | 5.3.18-150300.38.53.1 | SUSE-SU-2022:1163-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.63.1.150300.18.39.1 | SUSE-SU-2024:2185-1, SUSE-SU-2022:1183-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLES for SAP 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.63.1 | SUSE-SU-2024:2185-1, SUSE-SU-2022:1183-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.63.1.150300.18.39.1 | SUSE-SU-2024:2185-1, SUSE-SU-2022:1183-1 |
| SLE Micro 5.2 | kernel-rt | 5.3.18-150300.85.1 | SUSE-SU-2024:2010-1, SUSE-SU-2022:1407-1 |
| SLE Micro 5.2 | kernel-source-rt | 5.3.18-150300.172.1 | SUSE-SU-2024:2010-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.63.1 | SUSE-SU-2024:2185-1, SUSE-SU-2022:1183-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.63.1.150300.18.39.1 | SUSE-SU-2024:2185-1, SUSE-SU-2022:1183-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-150300.85.1 | SUSE-SU-2024:2010-1, SUSE-SU-2022:1407-1 |
| SLE Micro 5.1 | kernel-source-rt | 5.3.18-150300.172.1 | SUSE-SU-2024:2010-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.63.1 | SUSE-SU-2024:2185-1, SUSE-SU-2022:1183-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_17 +1 | 1-150300.7.3.1 | SUSE-SU-2024:2185-1, SUSE-SU-2022:1183-1 |
| SLE HPC 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SUSE Real Time Module 15 SP3 | kernel-rt +3 | 5.3.18-150300.85.1 | SUSE-SU-2022:1407-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +6 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | dtb-aarch64 +11 | 5.3.18-150300.59.63.1 | SUSE-SU-2022:1183-1 |
| openSUSE Leap 15.3 | kernel-azure +2 | 5.3.18-150300.38.53.1 | SUSE-SU-2022:1163-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-150300.59.63.1.150300.18.39.1 | SUSE-SU-2022:1183-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.37.1-2 | — |
Advisories 15
- USN-6014-1 linux, linux-kvm, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6013-1 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6001-1 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5539-1 linux-bluefield, linux-gcp-5.4, linux-gke-5.4 vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5514-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-azure-fde, linux-gcp, linux-gke, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5469-1 linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5560-1 linux, linux-aws, linux-azure-4.15, linux-dell300x, linux-gcp-4.15, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5560-2 linux-hwe, linux-aws-hwe, linux-azure, linux-gcp, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- DSA-5173-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5127-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:1163-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1183-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2010-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1407-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2185-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2056381
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0b9111922b1f399aba6ed1e1b8f2079c3da1aed8
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e0588c291d6ce225f2b891753ca41d45ba42469
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=81b1d548d00bcd028303c4f3150fa753b9b8aa71
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b2f37aead1b82a770c48b5d583f35ec22aabb61e
- DSA-5127 vendor-advisory
- DSA-5173 vendor-advisory