Ubuntu 20.04 LTS USN-6417-1: Critical Kernel Security Issues Overview

ubuntu

October 4, 2023

Several security issues were fixed in the Linux kernel.

Summary

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-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-bluefield: Linux kernel for NVIDIA BlueField platforms

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

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

- linux-ibm: Linux kernel for IBM cloud systems

- linux-iot: Linux kernel for IoT platforms

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi: Linux kernel for Raspberry Pi systems

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

- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems

- linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems

- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems

- linux-hwe-5.4: Linux hardware en...

Read the Full Advisory

Topics Covered

security advisory denial of service critical system update ubuntu linux kernel eBPF

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1023-iot      5.4.0-1023.24
   linux-image-5.4.0-1031-xilinx-zynqmp  5.4.0-1031.35
   linux-image-5.4.0-1058-ibm      5.4.0-1058.63
   linux-image-5.4.0-1072-bluefield  5.4.0-1072.78
   linux-image-5.4.0-1078-gkeop    5.4.0-1078.82
   linux-image-5.4.0-1095-raspi    5.4.0-1095.106
   linux-image-5.4.0-1100-kvm      5.4.0-1100.106
   linux-image-5.4.0-1110-oracle   5.4.0-1110.119
   linux-image-5.4.0-1111-aws      5.4.0-1111.120
   linux-image-5.4.0-1115-gcp      5.4.0-1115.124
   linux-image-5.4.0-1117-azure    5.4.0-1117.124
   linux-image-5.4.0-164-generic   5.4.0-164.181
   linux-image-5.4.0-164-generic-lpae  5.4.0-164.181
   linux-image-5.4.0-164-lowlatency  5.4.0-164.181
   linux-image-aws-lts-20.04       5.4.0.1111.108
   linux-image-azure-lts-20.04     5.4.0.1117.110
   linux-image-bluefield           5.4.0.1072.67
   linux-image-gcp-lts-20.04       5.4.0.1115.117
   linux-image-generic             5.4.0.164.161
   linux-image-generic-lpae        5.4.0.164.161
   linux-image-gkeop               5.4.0.1078.76
   linux-image-gkeop-5.4           5.4.0.1078.76
   linux-image-ibm-lts-20.04       5.4.0.1058.87
   linux-image-kvm                 5.4.0.1100.95
   linux-image-lowlatency          5.4.0.164.161
   linux-image-oem                 5.4.0.164.161
   linux-image-oem-osp1            5.4.0.164.161
   linux-image-oracle-lts-20.04    5.4.0.1110.103
   linux-image-raspi               5.4.0.1095.125
   linux-image-raspi2              5.4.0.1095.125
   linux-image-virtual             5.4.0.164.161
   linux-image-xilinx-zynqmp       5.4.0.1031.32

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-5.4.0-1058-ibm      5.4.0-1058.63~18.04.1
   linux-image-5.4.0-1095-raspi    5.4.0-1095.106~18.04.1
   linux-image-5.4.0-1110-oracle   5.4.0-1110.119~18.04.1
   linux-image-5.4.0-1111-aws      5.4.0-1111.120~18.04.1
   linux-image-5.4.0-1115-gcp      5.4.0-1115.124~18.04.1
   linux-image-5.4.0-1117-azure    5.4.0-1117.124~18.04.1
   linux-image-5.4.0-164-generic   5.4.0-164.181~18.04.1
   linux-image-5.4.0-164-lowlatency  5.4.0-164.181~18.04.1
   linux-image-aws                 5.4.0.1111.89
   linux-image-azure               5.4.0.1117.90
   linux-image-gcp                 5.4.0.1115.91
   linux-image-generic-hwe-18.04   5.4.0.164.181~18.04.131
   linux-image-ibm                 5.4.0.1058.69
   linux-image-lowlatency-hwe-18.04  5.4.0.164.181~18.04.131
   linux-image-oem                 5.4.0.164.181~18.04.131
   linux-image-oem-osp1            5.4.0.164.181~18.04.131
   linux-image-oracle              5.4.0.1110.119~18.04.82
   linux-image-raspi-hwe-18.04     5.4.0.1095.92
   linux-image-snapdragon-hwe-18.04  5.4.0.164.181~18.04.131
   linux-image-virtual-hwe-18.04   5.4.0.164.181~18.04.131

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.