Ubuntu 20.04 LTS USN-6387-1 High Severity: Linux Kernel Risks

ubuntu

September 19, 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-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-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 enablement (HWE) kernel

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

- linux-oracle-5.4: Linux kernel for Oracl...

Read the Full Advisory

Topics Covered

security advisory denial of service high severity buffer overflow Ubuntu system update linux kernel

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1022-iot      5.4.0-1022.23
   linux-image-5.4.0-1030-xilinx-zynqmp  5.4.0-1030.34
   linux-image-5.4.0-1057-ibm      5.4.0-1057.62
   linux-image-5.4.0-1077-gkeop    5.4.0-1077.81
   linux-image-5.4.0-1099-kvm      5.4.0-1099.105
   linux-image-5.4.0-1109-oracle   5.4.0-1109.118
   linux-image-5.4.0-1110-aws      5.4.0-1110.119
   linux-image-5.4.0-1113-gcp      5.4.0-1113.122
   linux-image-5.4.0-1116-azure    5.4.0-1116.123
   linux-image-5.4.0-163-generic   5.4.0-163.180
   linux-image-5.4.0-163-generic-lpae  5.4.0-163.180
   linux-image-5.4.0-163-lowlatency  5.4.0-163.180
   linux-image-aws-lts-20.04       5.4.0.1110.107
   linux-image-azure-lts-20.04     5.4.0.1116.109
   linux-image-gcp-lts-20.04       5.4.0.1113.115
   linux-image-generic             5.4.0.163.160
   linux-image-generic-lpae        5.4.0.163.160
   linux-image-gkeop               5.4.0.1077.75
   linux-image-gkeop-5.4           5.4.0.1077.75
   linux-image-ibm-lts-20.04       5.4.0.1057.86
   linux-image-kvm                 5.4.0.1099.94
   linux-image-lowlatency          5.4.0.163.160
   linux-image-oem                 5.4.0.163.160
   linux-image-oem-osp1            5.4.0.163.160
   linux-image-oracle-lts-20.04    5.4.0.1109.102
   linux-image-virtual             5.4.0.163.160
   linux-image-xilinx-zynqmp       5.4.0.1030.32

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-5.4.0-1057-ibm      5.4.0-1057.62~18.04.1
   linux-image-5.4.0-1109-oracle   5.4.0-1109.118~18.04.1
   linux-image-5.4.0-1110-aws      5.4.0-1110.119~18.04.1
   linux-image-5.4.0-1113-gcp      5.4.0-1113.122~18.04.1
   linux-image-5.4.0-1116-azure    5.4.0-1116.123~18.04.1
   linux-image-5.4.0-163-generic   5.4.0-163.180~18.04.1
   linux-image-5.4.0-163-lowlatency  5.4.0-163.180~18.04.1
   linux-image-aws                 5.4.0.1110.88
   linux-image-azure               5.4.0.1116.89
   linux-image-gcp                 5.4.0.1113.89
   linux-image-generic-hwe-18.04   5.4.0.163.180~18.04.130
   linux-image-ibm                 5.4.0.1057.68
   linux-image-lowlatency-hwe-18.04  5.4.0.163.180~18.04.130
   linux-image-oem                 5.4.0.163.180~18.04.130
   linux-image-oem-osp1            5.4.0.163.180~18.04.130
   linux-image-oracle              5.4.0.1109.118~18.04.81
   linux-image-snapdragon-hwe-18.04  5.4.0.163.180~18.04.130
   linux-image-virtual-hwe-18.04   5.4.0.163.180~18.04.130

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.