Ubuntu 19.10 & 18.04 LTS Security Advisory: Multiple Kernel Issues

ubuntu

February 18, 2020

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

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi2: Linux kernel for Raspberry Pi 2

- linux-azure-5.3: Linux kernel for Microsoft Azure Cloud systems

- linux-gcp-5.3: Linux kernel for Google Cloud Platform (GCP) systems

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

- linux-raspi2-5.3: Linux kernel for Raspberry Pi 2

Details:

It was discovered that the Linux kernel did not properly clear data

structures on context switches for certain Intel graphics processors. A

local attacker could use this to expose sensitive information.

(CVE-2019-14615)

It was discovered that the Atheros 802.11ac wireless USB device driver in

the Linux kernel did not properly validate device metadata. A physic...

Read the Full Advisory

Topics Covered

security advisory denial of service kernel ubuntu memory exhaustion linux sensitive information

Update Instructions

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

Ubuntu 19.10:
  linux-image-5.3.0-1009-oracle   5.3.0-1009.10
  linux-image-5.3.0-1010-kvm      5.3.0-1010.11
  linux-image-5.3.0-1011-aws      5.3.0-1011.12
  linux-image-5.3.0-1012-gcp      5.3.0-1012.13
  linux-image-5.3.0-1018-raspi2   5.3.0-1018.20
  linux-image-5.3.0-40-generic    5.3.0-40.32
  linux-image-5.3.0-40-generic-lpae  5.3.0-40.32
  linux-image-5.3.0-40-lowlatency  5.3.0-40.32
  linux-image-5.3.0-40-snapdragon  5.3.0-40.32
  linux-image-aws                 5.3.0.1011.13
  linux-image-gcp                 5.3.0.1012.13
  linux-image-generic             5.3.0.40.34
  linux-image-generic-lpae        5.3.0.40.34
  linux-image-gke                 5.3.0.1012.13
  linux-image-kvm                 5.3.0.1010.12
  linux-image-lowlatency          5.3.0.40.34
  linux-image-oracle              5.3.0.1009.10
  linux-image-raspi2              5.3.0.1018.15
  linux-image-snapdragon          5.3.0.40.34
  linux-image-virtual             5.3.0.40.34

Ubuntu 18.04 LTS:
  linux-image-5.3.0-1012-gcp      5.3.0-1012.13~18.04.1
  linux-image-5.3.0-1013-azure    5.3.0-1013.14~18.04.1
  linux-image-5.3.0-1018-raspi2   5.3.0-1018.20~18.04.1
  linux-image-5.3.0-40-generic    5.3.0-40.32~18.04.1
  linux-image-5.3.0-40-generic-lpae  5.3.0-40.32~18.04.1
  linux-image-5.3.0-40-lowlatency  5.3.0-40.32~18.04.1
  linux-image-azure-edge          5.3.0.1013.13
  linux-image-gcp-edge            5.3.0.1012.11
  linux-image-generic-hwe-18.04   5.3.0.40.97
  linux-image-generic-lpae-hwe-18.04  5.3.0.40.97
  linux-image-lowlatency-hwe-18.04  5.3.0.40.97
  linux-image-raspi2-hwe-18.04    5.3.0.1018.7
  linux-image-snapdragon-hwe-18.04  5.3.0.40.97
  linux-image-virtual-hwe-18.04   5.3.0.40.97

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.