Description
A use-after-free flaw was found in the Linux kernel’s Amateur Radio AX.25 protocol functionality in the way a user connects with the protocol. This flaw allows a local user to crash the system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Kernel | Not-Known. | — |
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 | 5.17.3-1 | — |
| Debian 13 | linux | 5.17.3-1 | — |
| Debian 12 | linux | 5.17.3-1 | — |
| 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-oem-5.17 | 5.17.0-1004.4 | — |
| Ubuntu 22.04 LTS | linux-oem-6.0 +2 | No fix yet | — |
| 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-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 | 4.15.0-189.200 | USN-5515-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1137.148 | USN-5515-1 |
| 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 | 4.15.0-1146.161 | USN-5515-1 |
| 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 | 4.15.0-1049.54 | USN-5515-1 |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1131.147 | USN-5515-1 |
| 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 | 4.15.0-1123.128 | USN-5515-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1102.113 | USN-5515-1 |
| 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 | 4.15.0-1115.123 | USN-5515-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1133.143 | USN-5515-1 |
| 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 | 4.15.0-2076.81 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2057.63 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1094.105 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2041.46 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1083.90 | — |
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1114.123~20.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-234.268 | USN-5650-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1151.166 | USN-5650-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1137.148~16.04.1 | USN-5515-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1146.161~16.04.1 | USN-5541-1 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1131.147~16.04.1 | USN-5515-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-189.200~16.04.1 | USN-5515-1 |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1114.124 | USN-5650-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1102.113~16.04.1 | USN-5515-1 |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1113.119 | USN-5650-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1146.161~14.04.1 | USN-5515-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-234.268~14.04.1 | USN-5650-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.82.1-1 | — |
Advisories 9
- WID-SEC-2022-0162 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 9, 2026
- USN-5650-1 linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-5515-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5541-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 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
- 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