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6.8
CVE-2025-40254: Linux kernel crash risk with Open vSwitch on cloud images
CVE-2025-40254 · published 11 months ago
Summary
The Linux kernel versions used in Debian and several Ubuntu cloud images (Azure, AWS, GCP, HWE) contain a coding error in the Open vSwitch networking component that can cause the system to stop working (kernel crash) when certain network actions are processed. Updating the operating system to the latest kernel release fixes the problem and restores stable operation.
What to do
- Update debian rootio-linux to version 6.1.159-1.root.io.75.
- Update debian rootio-linux to version 6.12.63-1.root.io.64.
- Update canonical linux-aws-5.15 to version 5.15.0-1103.110~20.04.1.
- Update canonical linux-azure-5.15 to version 5.15.0-1110.119~20.04.1.
- Update canonical linux-gcp-5.15 to version 5.15.0-1103.112~20.04.1.
- Update canonical linux-hwe-5.15 to version 5.15.0-173.183~20.04.1.
- Update canonical linux-ibm-5.15 to version 5.15.0-1097.100~20.04.1.
- Update canonical linux-intel-iotg-5.15 to version 5.15.0-1098.104~20.04.1.
- Update canonical linux-lowlatency-hwe-5.15 to version 5.15.0-173.183~20.04.1.
- Update canonical linux-nvidia-tegra-5.15 to version 5.15.0-1055.55~20.04.1.
- Update canonical linux-oracle-5.15 to version 5.15.0-1100.106~20.04.1.
- Update canonical linux-riscv-5.15 to version 5.15.0-1097.101~20.04.1.
- Update canonical linux to version 5.15.0-173.183.
- Update canonical linux-aws to version 5.15.0-1103.110.
- Update canonical linux-aws-6.8 to version 6.8.0-1050.53~22.04.1.
- Update canonical linux-azure to version 5.15.0-1109.118.
- Update canonical linux-azure-6.8 to version 6.8.0-1051.57~22.04.1.
- Update canonical linux-gcp to version 5.15.0-1103.112.
- Update canonical linux-gcp-6.8 to version 6.8.0-1052.55~22.04.1.
- Update canonical linux-gke to version 5.15.0-1099.105.
- Update canonical linux-gkeop to version 5.15.0-1086.94.
- Update canonical linux-hwe-6.8 to version 6.8.0-106.106~22.04.1.
- Update canonical linux-ibm to version 5.15.0-1097.100.
- Update canonical linux-ibm-6.8 to version 6.8.0-1049.49~22.04.1.
- Update canonical linux-intel-iotg to version 5.15.0-1098.104.
- Update canonical linux-kvm to version 5.15.0-1095.100.
- Update canonical linux-lowlatency to version 5.15.0-173.183.
- Update canonical linux-lowlatency-hwe-6.8 to version 6.8.0-106.106.1~22.04.1.
- Update canonical linux-nvidia to version 5.15.0-1098.99.
- Update canonical linux-nvidia-6.8 to version 6.8.0-1049.52~22.04.1.
- Update canonical linux-nvidia-tegra to version 5.15.0-1055.55.
- Update canonical linux-nvidia-tegra-igx to version 5.15.0-1044.44.
- Update canonical linux-oracle to version 5.15.0-1100.106.
- Update canonical linux-oracle-6.8 to version 6.8.0-1047.48~22.04.1.
- Update canonical linux-raspi to version 5.15.0-1097.100.
- Update canonical linux-riscv-6.8 to version 6.8.0-106.106~22.04.1.
- Update canonical linux-xilinx-zynqmp to version 5.15.0-1067.71.
- Update canonical linux-bluefield to version 5.15.0-1086.88.
- Update canonical linux-aws-fips to version 5.15.0-1103.110+fips1.
- Update canonical linux-azure-fips to version 5.15.0-1109.118+fips1.
- Update canonical linux-fips to version 5.15.0-173.183+fips1.
- Update canonical linux-gcp-fips to version 5.15.0-1103.112+fips1.
- Update canonical linux-intel-iot-realtime to version 5.15.0-1094.96.
- Update canonical linux-realtime to version 5.15.0-1102.111.
- Update canonical linux-realtime-6.8 to version 6.8.1-1045.46~22.04.1.
- Update canonical linux to version 6.8.0-106.106.
- Update canonical linux-aws to version 6.8.0-1050.53.
- Update canonical linux-aws-6.17 to version 6.17.0-1009.9~24.04.2.
- Update canonical linux-azure to version 6.8.0-1051.57.
- Update canonical linux-azure-6.17 to version 6.17.0-1010.10~24.04.1.
- Update canonical linux-gcp to version 6.8.0-1052.55.
- Update canonical linux-gcp-6.17 to version 6.17.0-1009.9~24.04.3.
- Update canonical linux-gke to version 6.8.0-1048.53.
- Update canonical linux-gkeop to version 6.8.0-1035.38.
- Update canonical linux-hwe-6.17 to version 6.17.0-19.19~24.04.2.
- Update canonical linux-ibm to version 6.8.0-1049.49.
- Update canonical linux-lowlatency to version 6.8.0-106.106.1.
- Update canonical linux-nvidia to version 6.8.0-1049.52.
- Update canonical linux-nvidia-6.17 to version 6.17.0-1018.18.
- Update canonical linux-nvidia-lowlatency to version 6.8.0-1049.52.1.
- Update canonical linux-nvidia-tegra to version 6.8.0-1020.20.
- Update canonical linux-oem-6.17 to version 6.17.0-1017.17.
- Update canonical linux-oracle to version 6.8.0-1047.48.
- Update canonical linux-oracle-6.17 to version 6.17.0-1009.9~24.04.1.
- Update canonical linux-raspi to version 6.8.0-1050.54.
- Update canonical linux-riscv-6.17 to version 6.17.0-19.19.1~24.04.1.
- Update canonical linux-xilinx to version 6.8.0-1028.29.
- Update canonical linux-aws-fips to version 6.8.0-1050.53+fips1.
- Update canonical linux-azure-fips to version 6.8.0-1052.58+fips1.
- Update canonical linux-fips to version 6.8.0-106.106+fips1.
- Update canonical linux-gcp-fips to version 6.8.0-1052.55+fips1.
- Update canonical linux-raspi-realtime to version 6.8.0-2040.41.
- Update canonical linux-realtime to version 6.8.1-1045.46.
- Update canonical linux-realtime-6.17 to version 6.17.0-1008.9~24.04.1.
- Update canonical linux to version 6.17.0-19.19.
- Update canonical linux-aws to version 6.17.0-1009.9.
- Update canonical linux-azure to version 6.17.0-1010.10.
- Update canonical linux-gcp to version 6.17.0-1009.9.
- Update canonical linux-oracle to version 6.17.0-1009.9.
- Update canonical linux-raspi to version 6.17.0-1010.10.
- Update canonical linux-realtime to version 6.17.0-1008.9.
- Update canonical linux-riscv to version 6.17.0-19.19.1.
- Update debian rootio-linux to version 5.10.247-1.root.io.42.
- Update canonical rootio-linux to version 6.8.0-124.124.root.io.73.
- Update canonical rootio-linux to version 6.8.0-134.134.root.io.79.
- Update canonical rootio-linux to version 6.8.0-134.134.root.io.80.
- Update canonical rootio-linux to version 6.8.0-136.136.root.io.82.
- Update canonical rootio-linux to version 6.8.0-136.136.root.io.83.
- Update canonical linux-bluefield to version 6.8.0-1017.21.
- Update linux to version 5.15.0-198.208.aikido.116.
- Update rootio-linux to version 5.15.0-198.208.aikido.116.
- Update linux to version 6.8.0-146.146.aikido.89.
- Update rootio-linux to version 6.8.0-146.146.aikido.89.
- Update canonical linux-azure-fde to version 5.15.0-1109.118.1.
- Update canonical linux-azure-fde-6.8 to version 6.8.0-1058.65~22.04.1.
- Update canonical linux-azure-fde to version 6.8.0-1058.65.
- Update linux to version 6.8.0-147.147.aikido.90.
- Update rootio-linux to version 6.8.0-147.147.aikido.90.
- Update linux to version 6.12.113-1.aikido.163.
- Update rootio-linux to version 6.12.113-1.aikido.163.
- Update linux to version 6.1.190-1.aikido.167.
- Update rootio-linux to version 6.1.190-1.aikido.167.
- Update debian linux to version 6.1.159-1.
- Update debian linux to version 6.12.63-1.
- Update debian linux to version 6.17.10-1.
- Update linux kernel to version 6.17.10.
- Update linux to version 5.15.0-202.212.aikido.118.
- Update rootio-linux to version 5.15.0-202.212.aikido.118.
- Update linux to version 6.12.115-2.aikido.164.
- Update rootio-linux to version 6.12.115-2.aikido.164.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Root:Debian:12 | debian | rootio-linux |
< 6.1.159-1.root.io.75 Fix: upgrade to 6.1.159-1.root.io.75
|
| Root:Debian:13 | debian | rootio-linux |
< 6.12.63-1.root.io.64 Fix: upgrade to 6.12.63-1.root.io.64
|
| Ubuntu:Pro:14.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-aws-hwe | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-hwe | All versions |
| Ubuntu:16.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-oracle | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-aws-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-edge | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gkeop-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-hwe-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-ibm-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-kvm | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oem | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-oracle-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-raspi-5.4 | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-aws-5.15 |
< 5.15.0-1103.110~20.04.1 Fix: upgrade to 5.15.0-1103.110~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-aws-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-azure-5.15 |
< 5.15.0-1110.119~20.04.1 Fix: upgrade to 5.15.0-1110.119~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-azure-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-fde | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-bluefield | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-gcp-5.15 |
< 5.15.0-1103.112~20.04.1 Fix: upgrade to 5.15.0-1103.112~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke | All versions |
Showing 50 of 218. Show the rest
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:20.04:LTS | canonical | linux-gke-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-hwe-5.15 |
< 5.15.0-173.183~20.04.1 Fix: upgrade to 5.15.0-173.183~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.8 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-ibm | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-ibm-5.15 |
< 5.15.0-1097.100~20.04.1 Fix: upgrade to 5.15.0-1097.100~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-intel-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-intel-iotg-5.15 |
< 5.15.0-1098.104~20.04.1 Fix: upgrade to 5.15.0-1098.104~20.04.1
|
| Ubuntu:Pro:20.04:LTS | canonical | linux-iot | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-lowlatency-hwe-5.15 |
< 5.15.0-173.183~20.04.1 Fix: upgrade to 5.15.0-173.183~20.04.1
|
| Ubuntu:Pro:20.04:LTS | canonical | linux-nvidia-tegra-5.15 |
< 5.15.0-1055.55~20.04.1 Fix: upgrade to 5.15.0-1055.55~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-oem-5.10 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.14 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.6 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-oracle-5.15 |
< 5.15.0-1100.106~20.04.1 Fix: upgrade to 5.15.0-1100.106~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.8 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-raspi | All versions |
| Ubuntu:20.04:LTS | canonical | linux-raspi2 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.11 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-riscv-5.15 |
< 5.15.0-1097.101~20.04.1 Fix: upgrade to 5.15.0-1097.101~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.8 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-xilinx-zynqmp | All versions |
| Ubuntu:22.04:LTS | canonical | linux |
< 5.15.0-173.183 Fix: upgrade to 5.15.0-173.183
|
| Ubuntu:22.04:LTS | canonical | linux-allwinner-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws |
< 5.15.0-1103.110 Fix: upgrade to 5.15.0-1103.110
|
| Ubuntu:22.04:LTS | canonical | linux-aws-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.8 |
< 6.8.0-1050.53~22.04.1 Fix: upgrade to 6.8.0-1050.53~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-azure |
< 5.15.0-1109.118 Fix: upgrade to 5.15.0-1109.118
|
| Ubuntu:22.04:LTS | canonical | linux-azure-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.8 |
< 6.8.0-1051.57~22.04.1 Fix: upgrade to 6.8.0-1051.57~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.8 |
< 6.8.0-1058.65~22.04.1 Fix: upgrade to 6.8.0-1058.65~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-gcp |
< 5.15.0-1103.112 Fix: upgrade to 5.15.0-1103.112
|
| Ubuntu:22.04:LTS | canonical | linux-gcp-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.8 |
< 6.8.0-1052.55~22.04.1 Fix: upgrade to 6.8.0-1052.55~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-gke |
< 5.15.0-1099.105 Fix: upgrade to 5.15.0-1099.105
|
| Ubuntu:22.04:LTS | canonical | linux-gkeop |
< 5.15.0-1086.94 Fix: upgrade to 5.15.0-1086.94
|
| Ubuntu:22.04:LTS | canonical | linux-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.8 |
< 6.8.0-106.106~22.04.1 Fix: upgrade to 6.8.0-106.106~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-ibm |
< 5.15.0-1097.100 Fix: upgrade to 5.15.0-1097.100
|
| Ubuntu:22.04:LTS | canonical | linux-ibm-6.8 |
< 6.8.0-1049.49~22.04.1 Fix: upgrade to 6.8.0-1049.49~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-intel-iot-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iotg |
< 5.15.0-1098.104 Fix: upgrade to 5.15.0-1098.104
|
| Ubuntu:22.04:LTS | canonical | linux-kvm |
< 5.15.0-1095.100 Fix: upgrade to 5.15.0-1095.100
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency |
< 5.15.0-173.183 Fix: upgrade to 5.15.0-173.183
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.8 |
< 6.8.0-106.106.1~22.04.1 Fix: upgrade to 6.8.0-106.106.1~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-nvidia |
< 5.15.0-1098.99 Fix: upgrade to 5.15.0-1098.99
|
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.8 |
< 6.8.0-1049.52~22.04.1 Fix: upgrade to 6.8.0-1049.52~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-nvidia-tegra |
< 5.15.0-1055.55 Fix: upgrade to 5.15.0-1055.55
|
| Ubuntu:22.04:LTS | canonical | linux-nvidia-tegra-igx |
< 5.15.0-1044.44 Fix: upgrade to 5.15.0-1044.44
|
| Ubuntu:22.04:LTS | canonical | linux-oem-5.17 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.0 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.1 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle |
< 5.15.0-1100.106 Fix: upgrade to 5.15.0-1100.106
|
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.8 |
< 6.8.0-1047.48~22.04.1 Fix: upgrade to 6.8.0-1047.48~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-raspi |
< 5.15.0-1097.100 Fix: upgrade to 5.15.0-1097.100
|
| Ubuntu:22.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.8 |
< 6.8.0-106.106~22.04.1 Fix: upgrade to 6.8.0-106.106~22.04.1
|
| Ubuntu:22.04:LTS | canonical | linux-starfive-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-xilinx-zynqmp |
< 5.15.0-1067.71 Fix: upgrade to 5.15.0-1067.71
|
| Ubuntu:Nvidia-BlueField:22.04:LTS | canonical | linux-bluefield |
< 5.15.0-1086.88 Fix: upgrade to 5.15.0-1086.88
|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | canonical | linux-aws-fips |
< 5.15.0-1103.110+fips1 Fix: upgrade to 5.15.0-1103.110+fips1
|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | canonical | linux-azure-fips |
< 5.15.0-1109.118+fips1 Fix: upgrade to 5.15.0-1109.118+fips1
|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | canonical | linux-fips |
< 5.15.0-173.183+fips1 Fix: upgrade to 5.15.0-173.183+fips1
|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | canonical | linux-gcp-fips |
< 5.15.0-1103.112+fips1 Fix: upgrade to 5.15.0-1103.112+fips1
|
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-intel-iot-realtime |
< 5.15.0-1094.96 Fix: upgrade to 5.15.0-1094.96
|
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-realtime |
< 5.15.0-1102.111 Fix: upgrade to 5.15.0-1102.111
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| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-realtime-6.8 |
< 6.8.1-1045.46~22.04.1 Fix: upgrade to 6.8.1-1045.46~22.04.1
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| Ubuntu:24.04:LTS | canonical | linux |
< 6.8.0-106.106 Fix: upgrade to 6.8.0-106.106
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| Ubuntu:24.04:LTS | canonical | linux-aws |
< 6.8.0-1050.53 Fix: upgrade to 6.8.0-1050.53
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| Ubuntu:24.04:LTS | canonical | linux-aws-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-6.17 |
< 6.17.0-1009.9~24.04.2 Fix: upgrade to 6.17.0-1009.9~24.04.2
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| Ubuntu:24.04:LTS | canonical | linux-azure |
< 6.8.0-1051.57 Fix: upgrade to 6.8.0-1051.57
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| Ubuntu:24.04:LTS | canonical | linux-azure-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.17 |
< 6.17.0-1010.10~24.04.1 Fix: upgrade to 6.17.0-1010.10~24.04.1
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| Ubuntu:24.04:LTS | canonical | linux-azure-fde-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-nvidia | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-nvidia-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp |
< 6.8.0-1052.55 Fix: upgrade to 6.8.0-1052.55
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| Ubuntu:24.04:LTS | canonical | linux-gcp-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.17 |
< 6.17.0-1009.9~24.04.3 Fix: upgrade to 6.17.0-1009.9~24.04.3
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| Ubuntu:24.04:LTS | canonical | linux-gke |
< 6.8.0-1048.53 Fix: upgrade to 6.8.0-1048.53
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| Ubuntu:24.04:LTS | canonical | linux-gkeop |
< 6.8.0-1035.38 Fix: upgrade to 6.8.0-1035.38
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| Ubuntu:24.04:LTS | canonical | linux-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.17 |
< 6.17.0-19.19~24.04.2 Fix: upgrade to 6.17.0-19.19~24.04.2
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| Ubuntu:24.04:LTS | canonical | linux-ibm |
< 6.8.0-1049.49 Fix: upgrade to 6.8.0-1049.49
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| Ubuntu:24.04:LTS | canonical | linux-lowlatency |
< 6.8.0-106.106.1 Fix: upgrade to 6.8.0-106.106.1
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| Ubuntu:24.04:LTS | canonical | linux-lowlatency-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia |
< 6.8.0-1049.52 Fix: upgrade to 6.8.0-1049.52
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| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.17 |
< 6.17.0-1018.18 Fix: upgrade to 6.17.0-1018.18
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| Ubuntu:24.04:LTS | canonical | linux-nvidia-lowlatency |
< 6.8.0-1049.52.1 Fix: upgrade to 6.8.0-1049.52.1
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| Ubuntu:24.04:LTS | canonical | linux-nvidia-tegra |
< 6.8.0-1020.20 Fix: upgrade to 6.8.0-1020.20
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| Ubuntu:24.04:LTS | canonical | linux-oem-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.17 |
< 6.17.0-1017.17 Fix: upgrade to 6.17.0-1017.17
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| Ubuntu:24.04:LTS | canonical | linux-oem-6.8 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle |
< 6.8.0-1047.48 Fix: upgrade to 6.8.0-1047.48
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| Ubuntu:24.04:LTS | canonical | linux-oracle-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-6.17 |
< 6.17.0-1009.9~24.04.1 Fix: upgrade to 6.17.0-1009.9~24.04.1
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| Ubuntu:24.04:LTS | canonical | linux-raspi |
< 6.8.0-1050.54 Fix: upgrade to 6.8.0-1050.54
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| Ubuntu:24.04:LTS | canonical | linux-raspi-realtime | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.17 |
< 6.17.0-19.19.1~24.04.1 Fix: upgrade to 6.17.0-19.19.1~24.04.1
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| Ubuntu:24.04:LTS | canonical | linux-xilinx |
< 6.8.0-1028.29 Fix: upgrade to 6.8.0-1028.29
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| Ubuntu:Pro:FIPS-updates:24.04:LTS | canonical | linux-aws-fips |
< 6.8.0-1050.53+fips1 Fix: upgrade to 6.8.0-1050.53+fips1
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| Ubuntu:Pro:FIPS-updates:24.04:LTS | canonical | linux-azure-fips |
< 6.8.0-1052.58+fips1 Fix: upgrade to 6.8.0-1052.58+fips1
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| Ubuntu:Pro:FIPS-updates:24.04:LTS | canonical | linux-fips |
< 6.8.0-106.106+fips1 Fix: upgrade to 6.8.0-106.106+fips1
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| Ubuntu:Pro:FIPS-updates:24.04:LTS | canonical | linux-gcp-fips |
< 6.8.0-1052.55+fips1 Fix: upgrade to 6.8.0-1052.55+fips1
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| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-raspi-realtime |
< 6.8.0-2040.41 Fix: upgrade to 6.8.0-2040.41
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| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime |
< 6.8.1-1045.46 Fix: upgrade to 6.8.1-1045.46
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| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime-6.14 | All versions |
| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime-6.17 |
< 6.17.0-1008.9~24.04.1 Fix: upgrade to 6.17.0-1008.9~24.04.1
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| Ubuntu:25.10 | canonical | linux |
< 6.17.0-19.19 Fix: upgrade to 6.17.0-19.19
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| Ubuntu:25.10 | canonical | linux-aws |
< 6.17.0-1009.9 Fix: upgrade to 6.17.0-1009.9
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| Ubuntu:25.10 | canonical | linux-azure |
< 6.17.0-1010.10 Fix: upgrade to 6.17.0-1010.10
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| Ubuntu:25.10 | canonical | linux-gcp |
< 6.17.0-1009.9 Fix: upgrade to 6.17.0-1009.9
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| Ubuntu:25.10 | canonical | linux-oracle |
< 6.17.0-1009.9 Fix: upgrade to 6.17.0-1009.9
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| Ubuntu:25.10 | canonical | linux-raspi |
< 6.17.0-1010.10 Fix: upgrade to 6.17.0-1010.10
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| Ubuntu:25.10 | canonical | linux-realtime |
< 6.17.0-1008.9 Fix: upgrade to 6.17.0-1008.9
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| Ubuntu:25.10 | canonical | linux-riscv |
< 6.17.0-19.19.1 Fix: upgrade to 6.17.0-19.19.1
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| Root:Debian:11 | debian | rootio-linux |
< 5.10.247-1.root.io.42 Fix: upgrade to 5.10.247-1.root.io.42
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| Root:Ubuntu:24.04 | canonical | rootio-linux |
< 6.8.0-124.124.root.io.73 < 6.8.0-134.134.root.io.79 < 6.8.0-134.134.root.io.80 < 6.8.0-136.136.root.io.82 < 6.8.0-136.136.root.io.83 Fix: upgrade to 6.8.0-124.124.root.io.73
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| Ubuntu:Nvidia-BlueField:24.04:LTS | canonical | linux-bluefield |
< 6.8.0-1017.21 Fix: upgrade to 6.8.0-1017.21
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| Root:Ubuntu:22.04 | – | linux |
< 5.15.0-198.208.aikido.116 < 5.15.0-202.212.aikido.118 Fix: upgrade to 5.15.0-198.208.aikido.116
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| Root:Ubuntu:22.04 | – | rootio-linux |
< 5.15.0-198.208.aikido.116 < 5.15.0-202.212.aikido.118 Fix: upgrade to 5.15.0-198.208.aikido.116
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| Root:Ubuntu:24.04 | – | linux |
< 6.8.0-146.146.aikido.89 < 6.8.0-147.147.aikido.90 Fix: upgrade to 6.8.0-146.146.aikido.89
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| Root:Ubuntu:24.04 | – | rootio-linux |
< 6.8.0-146.146.aikido.89 < 6.8.0-147.147.aikido.90 Fix: upgrade to 6.8.0-146.146.aikido.89
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| Ubuntu:22.04:LTS | canonical | linux-azure-fde |
< 5.15.0-1109.118.1 Fix: upgrade to 5.15.0-1109.118.1
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| Ubuntu:24.04:LTS | canonical | linux-azure-fde |
< 6.8.0-1058.65 Fix: upgrade to 6.8.0-1058.65
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| Root:Debian:13 | – | linux |
< 6.12.113-1.aikido.163 < 6.12.115-2.aikido.164 Fix: upgrade to 6.12.113-1.aikido.163
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| Root:Debian:13 | – | rootio-linux |
< 6.12.113-1.aikido.163 < 6.12.115-2.aikido.164 Fix: upgrade to 6.12.113-1.aikido.163
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| Root:Debian:12 | – | linux |
< 6.1.190-1.aikido.167 Fix: upgrade to 6.1.190-1.aikido.167
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| Root:Debian:12 | – | rootio-linux |
< 6.1.190-1.aikido.167 Fix: upgrade to 6.1.190-1.aikido.167
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| Debian:12 | debian | linux |
< 6.1.159-1 Fix: upgrade to 6.1.159-1
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| Debian:13 | debian | linux |
< 6.12.63-1 Fix: upgrade to 6.12.63-1
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| Debian:14 | debian | linux |
< 6.17.10-1 Fix: upgrade to 6.17.10-1
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| Linux | linux | kernel |
>= 6.13.0, < 6.17.10 Fix: upgrade to 6.17.10
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Original advisory text
CVE-2025-40254 in linux - Patched by Root
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: remove never-working support for setting nsh fields The validation of the set(nsh(...)) action is completely wrong. It runs through the nsh_key_put_from_nlattr() function that is the same function that validates NSH keys for the flow match and the push_nsh() action. However, the set(nsh(...)) has a very different memory layout. Nested attributes in there are doubled in size in case of the masked set(). That makes proper validation impossible. There is also confusion in the code between the 'masked' flag, that says that the nested attributes are doubled in size containing both the value and the mask, and the 'is_mask' that says that the value we're parsing is the mask. This is causing kernel crash on trying to write into mask part of the match with SW_FLOW_KEY_PUT() during validation, while validate_nsh() doesn't allocate any memory for it: BUG: kernel NULL pointer dereference, address: 0000000000000018 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 1c2383067 P4D 1c2383067 PUD 20b703067 PMD 0 Oops: Oops: 0000 [#1] SMP NOPTI CPU: 8 UID: 0 Kdump: loaded Not tainted 6.17.0-rc4+ #107 PREEMPT(voluntary) RIP: 0010:nsh_key_put_from_nlattr+0x19d/0x610 [openvswitch] Call Trace: <TASK> validate_nsh+0x60/0x90 [openvswitch] validate_set.constprop.0+0x270/0x3c0 [openvswitch] __ovs_nla_copy_actions+0x477/0x860 [openvswitch] ovs_nla_copy_actions+0x8d/0x100 [openvswitch] ovs_packet_cmd_execute+0x1cc/0x310 [openvswitch] genl_family_rcv_msg_doit+0xdb/0x130 genl_family_rcv_msg+0x14b/0x220 genl_rcv_msg+0x47/0xa0 netlink_rcv_skb+0x53/0x100 genl_rcv+0x24/0x40 netlink_unicast+0x280/0x3b0 netlink_sendmsg+0x1f7/0x430 ____sys_sendmsg+0x36b/0x3a0 ___sys_sendmsg+0x87/0xd0 __sys_sendmsg+0x6d/0xd0 do_syscall_64+0x7b/0x2c0 entry_SYSCALL_64_after_hwframe+0x76/0x7e The third issue with this process is that while trying to convert the non-masked set into masked one, validate_set() copies and doubles the size of the OVS_KEY_ATTR_NSH as if it didn't have any nested attributes. It should be copying each nested attribute and doubling them in size independently. And the process must be properly reversed during the conversion back from masked to a non-masked variant during the flow dump. In the end, the only two outcomes of trying to use this action are either validation failure or a kernel crash. And if somehow someone manages to install a flow with such an action, it will most definitely not do what it is supposed to, since all the keys and the masks are mixed up. Fixing all the issues is a complex task as it requires re-writing most of the validation code. Given that and the fact that this functionality never worked since introduction, let's just remove it altogether. It's better to re-introduce it later with a proper implementation instead of trying to fix it in stable releases.
References
- https://git.kernel.org/stable/c/3d2e7d3b28469081ccf08301df07cc411a1cc5e9 URL
- https://git.kernel.org/stable/c/87d2429381ddcf8cbd30c8c36793a4f7916d5f99 URL
- https://git.kernel.org/stable/c/f95bef5ba0b88d971b02c776f24bd17544930a3a URL
- https://git.kernel.org/stable/c/0b903f33c31c82b1c3591279fd8a23893802b987 Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html URL
- https://ubuntu.com/security/notices/USN-8096-2 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8096-5 Vendor Advisory
- https://security-tracker.debian.org/tracker/CVE-2025-40254 Vendor Advisory
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40254... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-40254 Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git Product
- https://git.kernel.org/stable/c/3415faa1fcb4150f29a72c5ecf959339d797feb7 Third Party Advisory
- https://git.kernel.org/stable/c/4689ba45296dbb3a47e70a1bc2ed0328263e48f3 Third Party Advisory
- https://git.kernel.org/stable/c/9c61d8fe1350b7322f4953318165d6719c3b1475 Third Party Advisory
- https://git.kernel.org/stable/c/dfe28c4167a9259fc0c372d9f9473e1ac95cff67 Third Party Advisory
- https://ubuntu.com/security/notices/USN-8094-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8095-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8100-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8095-2 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8094-2 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8095-3 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8096-3 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8096-4 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8116-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8095-4 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8094-3 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8094-4 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8125-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8126-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8094-5 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8095-5 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8141-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8152-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8163-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8243-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8261-1 Vendor Advisory
- https://ubuntu.com/security/CVE-2025-40254 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2025-40254 Third Party Advisory
- https://git.kernel.org/linus/dfe28c4167a9259fc0c372d9f9473e1ac95cff67 Third Party Advisory
- https://ubuntu.com/security/notices/USN-8096-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8165-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8163-2 Vendor Advisory
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker partial control
Severity
6.8
Medium
Timeline
Published4 Dec 2025
Updated4 Nov 2026
First seen6 Mar 2026
Sources
CVE-2025-40254 · NVD
UBUNTU-CVE-2025-40254 · OSV
DEBIAN-CVE-2025-40254 · OSV
CVE-2025-40254 · OSV
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