Ubuntu 20.04 & 18.04 LTS USN-5562-1 Moderate: Kernel Security Advisory

ubuntu

August 10, 2022

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

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

- linux-ibm: Linux kernel for IBM cloud systems

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi: Linux kernel for Raspberry Pi systems

- 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-gke-5.4: Linux kernel for Google Container Engine (GKE) systems

- l...

Read the Full Advisory

Topics Covered

security advisory denial of service kernel update Ubuntu security issues Linux kernel use-after-free

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1031-ibm      5.4.0-1031.35
   linux-image-5.4.0-1044-bluefield  5.4.0-1044.49
   linux-image-5.4.0-1051-gkeop    5.4.0-1051.54
   linux-image-5.4.0-1068-raspi    5.4.0-1068.78
   linux-image-5.4.0-1073-kvm      5.4.0-1073.78
   linux-image-5.4.0-1080-gke      5.4.0-1080.86
   linux-image-5.4.0-1081-oracle   5.4.0-1081.89
   linux-image-5.4.0-1083-aws      5.4.0-1083.90
   linux-image-5.4.0-1086-gcp      5.4.0-1086.94
   linux-image-5.4.0-1089-azure    5.4.0-1089.94
   linux-image-5.4.0-124-generic   5.4.0-124.140
   linux-image-5.4.0-124-generic-lpae  5.4.0-124.140
   linux-image-5.4.0-124-lowlatency  5.4.0-124.140
   linux-image-aws-lts-20.04       5.4.0.1083.83
   linux-image-azure-lts-20.04     5.4.0.1089.86
   linux-image-bluefield           5.4.0.1044.43
   linux-image-gcp-lts-20.04       5.4.0.1086.91
   linux-image-generic             5.4.0.124.125
   linux-image-generic-lpae        5.4.0.124.125
   linux-image-gke                 5.4.0.1080.88
   linux-image-gke-5.4             5.4.0.1080.88
   linux-image-gkeop               5.4.0.1051.52
   linux-image-gkeop-5.4           5.4.0.1051.52
   linux-image-ibm                 5.4.0.1031.60
   linux-image-ibm-lts-20.04       5.4.0.1031.60
   linux-image-kvm                 5.4.0.1073.70
   linux-image-lowlatency          5.4.0.124.125
   linux-image-oem                 5.4.0.124.125
   linux-image-oem-osp1            5.4.0.124.125
   linux-image-oracle-lts-20.04    5.4.0.1081.78
   linux-image-raspi               5.4.0.1068.101
   linux-image-raspi2              5.4.0.1068.101
   linux-image-virtual             5.4.0.124.125

Ubuntu 18.04 LTS:
   linux-image-5.4.0-1031-ibm      5.4.0-1031.35~18.04.1
   linux-image-5.4.0-1051-gkeop    5.4.0-1051.54~18.04.1
   linux-image-5.4.0-1068-raspi    5.4.0-1068.78~18.04.1
   linux-image-5.4.0-1080-gke      5.4.0-1080.86~18.04.1
   linux-image-5.4.0-1081-oracle   5.4.0-1081.89~18.04.1
   linux-image-5.4.0-1083-aws      5.4.0-1083.90~18.04.1
   linux-image-5.4.0-1086-gcp      5.4.0-1086.94~18.04.1
   linux-image-5.4.0-1089-azure    5.4.0-1089.94~18.04.1
   linux-image-5.4.0-124-generic   5.4.0-124.140~18.04.1
   linux-image-5.4.0-124-generic-lpae  5.4.0-124.140~18.04.1
   linux-image-5.4.0-124-lowlatency  5.4.0-124.140~18.04.1
   linux-image-aws                 5.4.0.1083.63
   linux-image-azure               5.4.0.1089.66
   linux-image-gcp                 5.4.0.1086.65
   linux-image-generic-hwe-18.04   5.4.0.124.140~18.04.104
   linux-image-generic-lpae-hwe-18.04  5.4.0.124.140~18.04.104
   linux-image-gke-5.4             5.4.0.1080.86~18.04.42
   linux-image-gkeop-5.4           5.4.0.1051.54~18.04.48
   linux-image-ibm                 5.4.0.1031.45
   linux-image-lowlatency-hwe-18.04  5.4.0.124.140~18.04.104
   linux-image-oem                 5.4.0.124.140~18.04.104
   linux-image-oem-osp1            5.4.0.124.140~18.04.104
   linux-image-oracle              5.4.0.1081.89~18.04.58
   linux-image-raspi-hwe-18.04     5.4.0.1068.68
   linux-image-snapdragon-hwe-18.04  5.4.0.124.140~18.04.104
   linux-image-virtual-hwe-18.04   5.4.0.124.140~18.04.104

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.