Ubuntu 20.04 LTS USN-6605-1: Moderate Kernel Denial of Service Threats

ubuntu

January 25, 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-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-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 enablement (HWE) kernel

- linux-ibm-5.4: Linux kern...

Read the Full Advisory

Topics Covered

security advisory denial of service kernel update system fix service threat Ubuntu 20.04

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1029-iot      5.4.0-1029.30
   linux-image-5.4.0-1036-xilinx-zynqmp  5.4.0-1036.40
   linux-image-5.4.0-1064-ibm      5.4.0-1064.69
   linux-image-5.4.0-1077-bluefield  5.4.0-1077.83
   linux-image-5.4.0-1084-gkeop    5.4.0-1084.88
   linux-image-5.4.0-1101-raspi    5.4.0-1101.113
   linux-image-5.4.0-1116-oracle   5.4.0-1116.125
   linux-image-5.4.0-1117-aws      5.4.0-1117.127
   linux-image-5.4.0-1121-gcp      5.4.0-1121.130
   linux-image-5.4.0-1122-azure    5.4.0-1122.129
   linux-image-5.4.0-170-generic   5.4.0-170.188
   linux-image-5.4.0-170-generic-lpae  5.4.0-170.188
   linux-image-5.4.0-170-lowlatency  5.4.0-170.188
   linux-image-aws-lts-20.04       5.4.0.1117.114
   linux-image-azure-lts-20.04     5.4.0.1122.115
   linux-image-bluefield           5.4.0.1077.72
   linux-image-gcp-lts-20.04       5.4.0.1121.123
   linux-image-generic             5.4.0.170.168
   linux-image-generic-lpae        5.4.0.170.168
   linux-image-gkeop               5.4.0.1084.82
   linux-image-gkeop-5.4           5.4.0.1084.82
   linux-image-ibm-lts-20.04       5.4.0.1064.93
   linux-image-lowlatency          5.4.0.170.168
   linux-image-oem                 5.4.0.170.168
   linux-image-oem-osp1            5.4.0.170.168
   linux-image-oracle-lts-20.04    5.4.0.1116.109
   linux-image-raspi               5.4.0.1101.131
   linux-image-raspi2              5.4.0.1101.131
   linux-image-virtual             5.4.0.170.168
   linux-image-xilinx-zynqmp       5.4.0.1036.36

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-5.4.0-1064-ibm      5.4.0-1064.69~18.04.1
   linux-image-5.4.0-1101-raspi    5.4.0-1101.113~18.04.1
   linux-image-5.4.0-1116-oracle   5.4.0-1116.125~18.04.1
   linux-image-5.4.0-1117-aws      5.4.0-1117.127~18.04.1
   linux-image-5.4.0-1121-gcp      5.4.0-1121.130~18.04.1
   linux-image-5.4.0-1122-azure    5.4.0-1122.129~18.04.1
   linux-image-5.4.0-170-generic   5.4.0-170.188~18.04.1
   linux-image-5.4.0-170-lowlatency  5.4.0-170.188~18.04.1
   linux-image-aws                 5.4.0.1117.95
   linux-image-azure               5.4.0.1122.95
   linux-image-gcp                 5.4.0.1121.97
   linux-image-generic-hwe-18.04   5.4.0.170.188~18.04.138
   linux-image-ibm                 5.4.0.1064.74
   linux-image-lowlatency-hwe-18.04  5.4.0.170.188~18.04.138
   linux-image-oem                 5.4.0.170.188~18.04.138
   linux-image-oem-osp1            5.4.0.170.188~18.04.138
   linux-image-oracle              5.4.0.1116.125~18.04.88
   linux-image-raspi-hwe-18.04     5.4.0.1101.98
   linux-image-snapdragon-hwe-18.04  5.4.0.170.188~18.04.138
   linux-image-virtual-hwe-18.04   5.4.0.170.188~18.04.138

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.