Ubuntu 20.04/18.04 USN-6131-1 Moderate: Kernel Crash Risks Addressed

ubuntu

June 1, 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-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-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 Oracle Cloud systems

Details:

Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in

the...

Read the Full Advisory

Topics Covered

security advisory denial of service kernel issue ubuntu system crash linux security fix

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1050-ibm      5.4.0-1050.55
   linux-image-5.4.0-1070-gkeop    5.4.0-1070.74
   linux-image-5.4.0-1092-kvm      5.4.0-1092.98
   linux-image-5.4.0-1100-gke      5.4.0-1100.107
   linux-image-5.4.0-1102-oracle   5.4.0-1102.111
   linux-image-5.4.0-1103-aws      5.4.0-1103.111
   linux-image-5.4.0-1106-gcp      5.4.0-1106.115
   linux-image-5.4.0-1109-azure    5.4.0-1109.115
   linux-image-5.4.0-150-generic   5.4.0-150.167
   linux-image-5.4.0-150-generic-lpae  5.4.0-150.167
   linux-image-5.4.0-150-lowlatency  5.4.0-150.167
   linux-image-aws-lts-20.04       5.4.0.1103.100
   linux-image-azure-lts-20.04     5.4.0.1109.102
   linux-image-gcp-lts-20.04       5.4.0.1106.108
   linux-image-generic             5.4.0.150.148
   linux-image-generic-lpae        5.4.0.150.148
   linux-image-gke                 5.4.0.1100.105
   linux-image-gke-5.4             5.4.0.1100.105
   linux-image-gkeop               5.4.0.1070.68
   linux-image-gkeop-5.4           5.4.0.1070.68
   linux-image-ibm                 5.4.0.1050.76
   linux-image-ibm-lts-20.04       5.4.0.1050.76
   linux-image-kvm                 5.4.0.1092.87
   linux-image-lowlatency          5.4.0.150.148
   linux-image-oem                 5.4.0.150.148
   linux-image-oem-osp1            5.4.0.150.148
   linux-image-oracle-lts-20.04    5.4.0.1102.95
   linux-image-virtual             5.4.0.150.148

Ubuntu 18.04 LTS:
   linux-image-5.4.0-1050-ibm      5.4.0-1050.55~18.04.1
   linux-image-5.4.0-1102-oracle   5.4.0-1102.111~18.04.1
   linux-image-5.4.0-1106-gcp      5.4.0-1106.115~18.04.1
   linux-image-5.4.0-1109-azure    5.4.0-1109.115~18.04.1
   linux-image-5.4.0-150-generic   5.4.0-150.167~18.04.1
   linux-image-5.4.0-150-generic-lpae  5.4.0-150.167~18.04.1
   linux-image-5.4.0-150-lowlatency  5.4.0-150.167~18.04.1
   linux-image-azure               5.4.0.1109.82
   linux-image-gcp                 5.4.0.1106.82
   linux-image-generic-hwe-18.04   5.4.0.150.167~18.04.121
   linux-image-generic-lpae-hwe-18.04  5.4.0.150.167~18.04.121
   linux-image-ibm                 5.4.0.1050.61
   linux-image-lowlatency-hwe-18.04  5.4.0.150.167~18.04.121
   linux-image-oem                 5.4.0.150.167~18.04.121
   linux-image-oem-osp1            5.4.0.150.167~18.04.121
   linux-image-oracle              5.4.0.1102.111~18.04.74
   linux-image-snapdragon-hwe-18.04  5.4.0.150.167~18.04.121
   linux-image-virtual-hwe-18.04   5.4.0.150.167~18.04.121

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.