Ubuntu 18.04 LTS: USN-5385-1 Critical: Kernel Issues Denial Of Service

ubuntu

April 21, 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-4.15: Linux kernel for Microsoft Azure Cloud systems

- linux-dell300x: Linux kernel for Dell 300x platforms

- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device

driver in the Linux kernel did not properly validate meta-data coming from

the device. A local attacker who can control an emulated ...

Read the Full Advisory

Topics Covered

security advisory denial of service Ubuntu update instructions critical severity system crash kernel issues

Update Instructions

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

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1041-dell300x  4.15.0-1041.46
  linux-image-4.15.0-1092-oracle  4.15.0-1092.101
  linux-image-4.15.0-1113-kvm     4.15.0-1113.116
  linux-image-4.15.0-1121-gcp     4.15.0-1121.135
  linux-image-4.15.0-1126-snapdragon  4.15.0-1126.135
  linux-image-4.15.0-1127-aws     4.15.0-1127.136
  linux-image-4.15.0-1137-azure   4.15.0-1137.150
  linux-image-4.15.0-176-generic  4.15.0-176.185
  linux-image-4.15.0-176-generic-lpae  4.15.0-176.185
  linux-image-4.15.0-176-lowlatency  4.15.0-176.185
  linux-image-aws-lts-18.04       4.15.0.1127.130
  linux-image-azure-lts-18.04     4.15.0.1137.110
  linux-image-dell300x            4.15.0.1041.43
  linux-image-gcp-lts-18.04       4.15.0.1121.140
  linux-image-generic             4.15.0.176.165
  linux-image-generic-lpae        4.15.0.176.165
  linux-image-kvm                 4.15.0.1113.109
  linux-image-lowlatency          4.15.0.176.165
  linux-image-oracle-lts-18.04    4.15.0.1092.102
  linux-image-snapdragon          4.15.0.1126.129
  linux-image-virtual             4.15.0.176.165

Ubuntu 16.04 ESM:
  linux-image-4.15.0-1092-oracle  4.15.0-1092.101~16.04.1
  linux-image-4.15.0-1121-gcp     4.15.0-1121.135~16.04.1
  linux-image-4.15.0-1127-aws-hwe  4.15.0-1127.136~16.04.1
  linux-image-4.15.0-1137-azure   4.15.0-1137.150~16.04.1
  linux-image-4.15.0-176-generic  4.15.0-176.185~16.04.1
  linux-image-4.15.0-176-lowlatency  4.15.0-176.185~16.04.1
  linux-image-aws-hwe             4.15.0.1127.117
  linux-image-azure               4.15.0.1137.127
  linux-image-gcp                 4.15.0.1121.122
  linux-image-generic-hwe-16.04   4.15.0.176.168
  linux-image-gke                 4.15.0.1121.122
  linux-image-lowlatency-hwe-16.04  4.15.0.176.168
  linux-image-oem                 4.15.0.176.168
  linux-image-oracle              4.15.0.1092.80
  linux-image-virtual-hwe-16.04   4.15.0.176.168

Ubuntu 14.04 ESM:
  linux-image-4.15.0-1137-azure   4.15.0-1137.150~14.04.1
  linux-image-azure               4.15.0.1137.109

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.