USN-3846-1: Linux kernel vulnerability

USN-3846-1: Linux kernel vulnerability

linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-raspi2 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 18.10


The system could be made to expose sensitive information.

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-kvm – Linux kernel for cloud environments
  • linux-raspi2 – Linux kernel for Raspberry Pi 2


It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory).

Update instructions

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

Ubuntu 18.10
linux-image-aws –
linux-image-azure –
linux-image-gcp –
linux-image-generic –
linux-image-generic-lpae –
linux-image-gke –
linux-image-kvm –
linux-image-lowlatency –
linux-image-raspi2 –
linux-image-snapdragon –

To update your system, please follow these instructions:

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.


Source: USN-3846-1: Linux kernel vulnerability

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