Description
A NULL pointer dereference 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 | Fixed in kernel v5.18-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 | 5.17.6-1 | — |
| Debian 13 | linux | 5.17.6-1 | — |
| Debian 12 | linux | 5.17.6-1 | — |
| 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 Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1103.105 | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux | 5.15.0-37.39 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1119.126 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1125.134 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1124.133 | USN-8962-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1120.130 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1115.121 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1102.110 | USN-8961-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1113.117 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1114.120 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1111.116 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-lowlatency | 5.15.0-197.207 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1114.115 | USN-8961-1 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1070.72 | USN-8963-1 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1059.59 | USN-8963-1 |
| Ubuntu 22.04 LTS | linux-oem-5.17 | 5.17.0-1011.12 | USN-5471-1 |
| Ubuntu 22.04 LTS | linux-oem-6.0 +3 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1116.122 | USN-8961-1, USN-5469-1 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1113.116 | USN-9029-1, 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-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-ibm | 5.4.0-1029.33 | USN-5514-1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1071.76 | USN-5514-1 |
| 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 +23 | 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 |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1111.115 | USN-8961-1 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1118.127 | USN-8961-1 |
| 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 22.04 LTS | linux-aws-fips | 5.15.0-1119.126+fips1 | USN-8961-1 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1125.134+fips1 | USN-8961-1 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-202.212+fips1 | USN-8961-1 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1120.130+fips1 | USN-8961-1 |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1088.95 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +10 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux-aws-5.15 | 5.15.0-1119.126~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-azure-5.15 | 5.15.0-1125.134~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1124.133~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-gcp-5.15 | 5.15.0-1120.130~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-hwe-5.15 | 5.15.0-202.212~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-ibm-5.15 | 5.15.0-1113.117~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1114.120~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-lowlatency-hwe-5.15 | 5.15.0-197.207~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1070.72~20.04.1 | USN-8963-1 |
| Ubuntu Pro 20.04 LTS | linux-oracle-5.15 | 5.15.0-1116.122~20.04.1 | USN-8961-1 |
| Ubuntu Pro 20.04 LTS | linux-riscv-5.15 | 5.15.0-1113.117~20.04.2 | — |
| Ubuntu Pro 18.04 LTS | linux +12 | No fix yet | — |
| 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 | 4.15.0-1137.148~16.04.1 | 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 | 4.4.0-1118.128 | USN-6014-1 |
| 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 | 4.4.0-1117.123 | USN-6013-1 |
| 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 | 4.4.0-239.273~14.04.1 | USN-6014-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.11.1 | SUSE-SU-2022:2520-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.7.1 | SUSE-SU-2022:2615-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.11.1.150400.24.3.6 | SUSE-SU-2022:2520-1 |
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.63.1 | 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-2022:1183-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.63.1 | 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-2022:1183-1 |
| SLE Micro 5.2 | kernel-rt | 5.3.18-150300.85.1 | SUSE-SU-2022:1407-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.63.1 | 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-2022:1183-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-150300.85.1 | SUSE-SU-2022:1407-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.11.1 | SUSE-SU-2022:2520-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_1 | 1-150400.9.5.3 | SUSE-SU-2022:2520-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.63.1 | SUSE-SU-2022:1183-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_17 | 1-150300.7.3.1 | SUSE-SU-2022:1183-1 |
| SUSE Real Time Module 15 SP3 | kernel-rt +3 | 5.3.18-150300.85.1 | SUSE-SU-2022:1407-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | dtb-aarch64 +10 | 5.14.21-150400.24.11.1 | SUSE-SU-2022:2520-1 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.7.1 | SUSE-SU-2022:2615-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.11.1.150400.24.3.6 | SUSE-SU-2022:2520-1 |
| 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 | 5.15.67.1-4 | — |
Advisories 21
- USN-8961-1 linux, linux-aws, linux-aws-5.15, linux-aws-fips, linux-azure, linux-azure-5.15, linux-azure-fde-5.15, linux-azure-fips, linux-fips, linux-gcp, linux-gcp-5.15, linux-gcp-fips, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel-iot-realtime, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8963-1 linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-9029-1 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8962-1 linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- WID-SEC-2022-0162 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 9, 2026
- 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-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-5539-1 linux-bluefield, linux-gcp-5.4, linux-gke-5.4 vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5541-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5471-1 linux-oem-5.17 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
- SUSE-SU-2022:2520-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2615-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 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-2022:1407-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2071047
- https://www.openwall.com/lists/oss-security/2022/04/02/4
- https://github.com/torvalds/linux/commit/fc6d01ff9ef03b66d4a3a23b46fc3c3d8cf92009
- https://github.com/torvalds/linux/commit/82e31755e55fbcea6a9dfaae5fe4860ade17cbc0
- https://access.redhat.com/security/cve/CVE-2022-1205