Ubuntu 20.04 LTS: USN-6924-1 Critical: Linux Kernel Security Issues

ubuntu

July 29, 2024

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-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-raspi: Linux kernel for Raspberry Pi systems

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

- 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 enablement (HWE) kernel

- linux-ibm-5.4: Linux kernel for IBM cloud systems

Details:

Several security issues were discovered in the Linux kernel.

An attacker could possibly use these to compromise the syst...

Read the Full Advisory

Topics Covered

security advisory security issue system update ubuntu attack vector linux kernel fix instructions

Update Instructions

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

Ubuntu 20.04 LTS
  linux-image-5.4.0-1041-iot      5.4.0-1041.42
  linux-image-5.4.0-1048-xilinx-zynqmp  5.4.0-1048.52
  linux-image-5.4.0-1076-ibm      5.4.0-1076.81
  linux-image-5.4.0-1089-bluefield  5.4.0-1089.96
  linux-image-5.4.0-1096-gkeop    5.4.0-1096.100
  linux-image-5.4.0-1113-raspi    5.4.0-1113.125
  linux-image-5.4.0-1117-kvm      5.4.0-1117.124
  linux-image-5.4.0-1133-gcp      5.4.0-1133.142
  linux-image-5.4.0-1134-azure    5.4.0-1134.141
  linux-image-5.4.0-190-generic   5.4.0-190.210
  linux-image-5.4.0-190-generic-lpae  5.4.0-190.210
  linux-image-5.4.0-190-lowlatency  5.4.0-190.210
  linux-image-azure-lts-20.04     5.4.0.1134.128
  linux-image-bluefield           5.4.0.1089.85
  linux-image-gcp-lts-20.04       5.4.0.1133.135
  linux-image-generic             5.4.0.190.188
  linux-image-generic-lpae        5.4.0.190.188
  linux-image-gkeop               5.4.0.1096.94
  linux-image-gkeop-5.4           5.4.0.1096.94
  linux-image-ibm-lts-20.04       5.4.0.1076.105
  linux-image-kvm                 5.4.0.1117.113
  linux-image-lowlatency          5.4.0.190.188
  linux-image-oem                 5.4.0.190.188
  linux-image-oem-osp1            5.4.0.190.188
  linux-image-raspi               5.4.0.1113.143
  linux-image-raspi2              5.4.0.1113.143
  linux-image-virtual             5.4.0.190.188
  linux-image-xilinx-zynqmp       5.4.0.1048.48

Ubuntu 18.04 LTS
  linux-image-5.4.0-1076-ibm      5.4.0-1076.81~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-1133-gcp      5.4.0-1133.142~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-1134-azure    5.4.0-1134.141~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-190-generic   5.4.0-190.210~18.04.1
                                  Available with Ubuntu Pro
  linux-image-5.4.0-190-lowlatency  5.4.0-190.210~18.04.1
                                  Available with Ubuntu Pro
  linux-image-azure               5.4.0.1134.141~18.04.1
                                  Available with Ubuntu Pro
  linux-image-gcp                 5.4.0.1133.142~18.04.1
                                  Available with Ubuntu Pro
  linux-image-generic-hwe-18.04   5.4.0.190.210~18.04.1
                                  Available with Ubuntu Pro
  linux-image-ibm                 5.4.0.1076.81~18.04.1
                                  Available with Ubuntu Pro
  linux-image-lowlatency-hwe-18.04  5.4.0.190.210~18.04.1
                                  Available with Ubuntu Pro
  linux-image-oem                 5.4.0.190.210~18.04.1
                                  Available with Ubuntu Pro
  linux-image-oem-osp1            5.4.0.190.210~18.04.1
                                  Available with Ubuntu Pro
  linux-image-snapdragon-hwe-18.04  5.4.0.190.210~18.04.1
                                  Available with Ubuntu Pro
  linux-image-virtual-hwe-18.04   5.4.0.190.210~18.04.1
                                  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.