Ubuntu 22.04 LTS Linux Kernel Critical Network Vulnerability USN-8631

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Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems - linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS - linux-gkeop: Linux kernel for Google Container Engine (GKE) systems - linux-ibm: Linux kernel for IBM cloud systems - linux-intel-iot-realtime: Linux kernel for Intel IoT Real-time platforms - linux-intel-iotg: Linux kernel for Intel IoT platforms - linux-kvm: Linux kernel for cloud environments - linux-nvidia: Linux kernel for NVIDIA systems - linux-nvidia-tegra: Linux kernel for NVIDIA Tegra systems - linux-realtime: Linux kernel for Real-time systems - linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors - linux-ibm-5.15: ... Read the Full Advisory

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems

- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS

- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems

- linux-ibm: Linux kernel for IBM cloud systems

- linux-intel-iot-realtime: Linux kernel for Intel IoT Real-time platforms

- linux-intel-iotg: Linux kernel for Intel IoT platforms

- linux-kvm: Linux kernel for cloud environments

- linux-nvidia: Linux kernel for NVIDIA systems

- linux-nvidia-tegra: Linux kernel for NVIDIA Tegra systems

- linux-realtime: Linux kernel for Real-time systems

- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors

- linux-ibm-5.15: ...

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS linux-image-5.15.0-1065-nvidia-tegra 5.15.0-1065.67 linux-image-5.15.0-1065-nvidia-tegra-rt 5.15.0-1065.67 linux-image-5.15.0-1076-xilinx-zynqmp 5.15.0-1076.80 linux-image-5.15.0-1096-gkeop 5.15.0-1096.104 linux-image-5.15.0-1105-intel-iot-realtime 5.15.0-1105.107 Available with Ubuntu Pro linux-image-5.15.0-1105-kvm 5.15.0-1105.110 linux-image-5.15.0-1107-ibm 5.15.0-1107.111 linux-image-5.15.0-1108-intel-iotg 5.15.0-1108.114 linux-image-5.15.0-1108-nvidia 5.15.0-1108.109 linux-image-5.15.0-1108-nvidia-lowlatency 5.15.0-1108.109 linux-image-5.15.0-1112-realtime 5.15.0-1112.121 Available with Ubuntu Pro linux-image-5.15.0-1113-aws 5.15.0-1113.120 linux-image-5.15.0-1113-aws-64k 5.15.0-1113.120 linux-image-5.15.0-1113-aws-fips 5.15.0-1113.120+fips1 Available with Ubuntu Pro linux-image-5.15.0-1118-azure 5.15.0-1118.127 linux-image-5.15.0-1118-azure-fde 5.15.0-1118.127 linux-image-5.15.0-1118-azure-fips 5.15.0-1118.127+fips1 Available with Ubuntu Pro linux-image-5.15.0-187-generic 5.15.0-187.197 linux-image-5.15.0-187-generic-64k 5.15.0-187.197 linux-image-5.15.0-187-generic-lpae 5.15.0-187.197 linux-image-aws-5.15 5.15.0.1113.116 linux-image-aws-64k-5.15 5.15.0.1113.116 linux-image-aws-64k-lts-22.04 5.15.0.1113.116 linux-image-aws-fips 5.15.0.1113.109 Available with Ubuntu Pro linux-image-aws-fips-5.15 5.15.0.1113.109 Available with Ubuntu Pro linux-image-aws-lts-22.04 5.15.0.1113.116 linux-image-azure-5.15 5.15.0.1118.116 linux-image-azure-fde-5.15 5.15.0.1118.127 linux-image-azure-fde-lts-22.04 5.15.0.1118.127 linux-image-azure-fips 5.15.0.1118.103 Available with Ubuntu Pro linux-image-azure-fips-5.15 5.15.0.1118.103 Available with Ubuntu Pro linux-image-azure-lts-22.04 5.15.0.1118.116 linux-image-generic 5.15.0.187.167 linux-image-generic-5.15 5.15.0.187.167 linux-image-generic-64k 5.15.0.187.167 linux-image-generic-64k-5.15 5.15.0.187.167 linux-image-generic-lpae 5.15.0.187.167 linux-image-generic-lpae-5.15 5.15.0.187.167 linux-image-gkeop 5.15.0.1096.95 linux-image-gkeop-5.15 5.15.0.1096.95 linux-image-ibm 5.15.0.1107.104 linux-image-ibm-5.15 5.15.0.1107.104 linux-image-intel-iot-realtime 5.15.0.1105.109 Available with Ubuntu Pro linux-image-intel-iot-realtime-5.15 5.15.0.1105.109 Available with Ubuntu Pro linux-image-intel-iotg 5.15.0.1108.107 linux-image-intel-iotg-5.15 5.15.0.1108.107 linux-image-kvm 5.15.0.1105.101 linux-image-kvm-5.15 5.15.0.1105.101 linux-image-nvidia 5.15.0.1108.108 linux-image-nvidia-5.15 5.15.0.1108.108 linux-image-nvidia-lowlatency 5.15.0.1108.108 linux-image-nvidia-lowlatency-5.15 5.15.0.1108.108 linux-image-nvidia-tegra 5.15.0.1065.65 linux-image-nvidia-tegra-5.15 5.15.0.1065.65 linux-image-nvidia-tegra-rt 5.15.0.1065.65 linux-image-nvidia-tegra-rt-5.15 5.15.0.1065.65 linux-image-realtime 5.15.0.1112.116 Available with Ubuntu Pro linux-image-realtime-5.15 5.15.0.1112.116 Available with Ubuntu Pro linux-image-virtual 5.15.0.187.167 linux-image-virtual-5.15 5.15.0.187.167 linux-image-xilinx-zynqmp 5.15.0.1076.79 linux-image-xilinx-zynqmp-5.15 5.15.0.1076.79 Ubuntu 20.04 LTS linux-image-5.15.0-1065-nvidia-tegra 5.15.0-1065.67~20.04.1 Available with Ubuntu Pro linux-image-5.15.0-1065-nvidia-tegra-rt 5.15.0-1065.67~20.04.1 Available with Ubuntu Pro linux-image-5.15.0-1107-ibm 5.15.0-1107.111~20.04.1 Available with Ubuntu Pro linux-image-5.15.0-1108-intel-iotg 5.15.0-1108.114~20.04.1 Available with Ubuntu Pro linux-image-5.15.0-1110-oracle 5.15.0-1110.116~20.04.1 Available with Ubuntu Pro linux-image-ibm 5.15.0.1107.111~20.04.1 Available with Ubuntu Pro linux-image-ibm-5.15 5.15.0.1107.111~20.04.1 Available with Ubuntu Pro linux-image-intel 5.15.0.1108.114~20.04.1 Available with Ubuntu Pro linux-image-intel-iotg 5.15.0.1108.114~20.04.1 Available with Ubuntu Pro linux-image-intel-iotg-5.15 5.15.0.1108.114~20.04.1 Available with Ubuntu Pro linux-image-nvidia-tegra 5.15.0.1065.67~20.04.1 Available with Ubuntu Pro linux-image-nvidia-tegra-5.15 5.15.0.1065.67~20.04.1 Available with Ubuntu Pro linux-image-nvidia-tegra-rt 5.15.0.1065.67~20.04.1 Available with Ubuntu Pro linux-image-nvidia-tegra-rt-5.15 5.15.0.1065.67~20.04.1 Available with Ubuntu Pro linux-image-oracle 5.15.0.1110.116~20.04.1 Available with Ubuntu Pro linux-image-oracle-5.15 5.15.0.1110.116~20.04.1 Available with Ubuntu Pro After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

CVE-2025-27558, CVE-2026-31414, CVE-2026-31448, CVE-2026-31705,

CVE-2026-43198, CVE-2026-43378, CVE-2026-43499, CVE-2026-46266,

CVE-2026-46331, CVE-2026-52924, CVE-2026-52989, CVE-2026-53086,

CVE-2026-53176, CVE-2026-53212, CVE-2026-53215, CVE-2026-53225,

CVE-2026-53228, CVE-2026-53359

Ubuntu Security Notice USN-8631-1

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