=========================================================================Ubuntu Security Notice USN-4319-1
April 06, 2020

linux, linux-aws, linux-gcp, linux-gcp-5.3, linux-hwe, linux-kvm,
linux-oracle, linux-oracle-5.3, linux-raspi2, linux-raspi2-5.3
vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10
- Ubuntu 18.04 LTS

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-gcp-5.3: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe: Linux hardware enablement (HWE) kernel
- linux-oracle-5.3: Linux kernel Oracle Cloud systems
- linux-raspi2-5.3: Linux kernel for Raspberry Pi 2

Details:

It was discovered that the IPMI message handler implementation in the Linux
kernel did not properly deallocate memory in certain situations. A local
attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2019-19046)

Al Viro discovered that the vfs layer in the Linux kernel contained a use-
after-free vulnerability. A local attacker could use this to cause a denial
of service (system crash) or possibly expose sensitive information (kernel
memory). (CVE-2020-8428)

Update instructions:

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

Ubuntu 19.10:
  linux-image-5.3.0-1014-oracle   5.3.0-1014.15
  linux-image-5.3.0-1015-kvm      5.3.0-1015.16
  linux-image-5.3.0-1016-aws      5.3.0-1016.17
  linux-image-5.3.0-1017-gcp      5.3.0-1017.18
  linux-image-5.3.0-1022-raspi2   5.3.0-1022.24
  linux-image-5.3.0-46-generic    5.3.0-46.38
  linux-image-5.3.0-46-generic-lpae  5.3.0-46.38
  linux-image-5.3.0-46-lowlatency  5.3.0-46.38
  linux-image-5.3.0-46-snapdragon  5.3.0-46.38
  linux-image-aws                 5.3.0.1016.18
  linux-image-gcp                 5.3.0.1017.18
  linux-image-generic             5.3.0.46.39
  linux-image-generic-lpae        5.3.0.46.39
  linux-image-gke                 5.3.0.1017.18
  linux-image-kvm                 5.3.0.1015.17
  linux-image-lowlatency          5.3.0.46.39
  linux-image-oracle              5.3.0.1014.15
  linux-image-raspi2              5.3.0.1022.19
  linux-image-snapdragon          5.3.0.46.39
  linux-image-virtual             5.3.0.46.39

Ubuntu 18.04 LTS:
  linux-image-5.3.0-1014-oracle   5.3.0-1014.15~18.04.1
  linux-image-5.3.0-1017-gcp      5.3.0-1017.18~18.04.1
  linux-image-5.3.0-1022-raspi2   5.3.0-1022.24~18.04.1
  linux-image-5.3.0-46-generic    5.3.0-46.38~18.04.1
  linux-image-5.3.0-46-generic-lpae  5.3.0-46.38~18.04.1
  linux-image-5.3.0-46-lowlatency  5.3.0-46.38~18.04.1
  linux-image-gcp-edge            5.3.0.1017.16
  linux-image-generic-hwe-18.04   5.3.0.46.102
  linux-image-generic-lpae-hwe-18.04  5.3.0.46.102
  linux-image-lowlatency-hwe-18.04  5.3.0.46.102
  linux-image-oracle-edge         5.3.0.1014.13
  linux-image-raspi2-hwe-18.04    5.3.0.1022.11
  linux-image-snapdragon-hwe-18.04  5.3.0.46.102
  linux-image-virtual-hwe-18.04   5.3.0.46.102

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.

References:
  https://ubuntu.com/security/notices/USN-4319-1
  CVE-2019-19046, CVE-2020-8428

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.3.0-46.38
  https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1016.17
  https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1017.18
  https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1015.16
  https://launchpad.net/ubuntu/+source/linux-oracle/5.3.0-1014.15
  https://launchpad.net/ubuntu/+source/linux-raspi2/5.3.0-1022.24
  https://launchpad.net/ubuntu/+source/linux-gcp-5.3/5.3.0-1017.18~18.04.1
  https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-46.38~18.04.1
  https://launchpad.net/ubuntu/+source/linux-oracle-5.3/5.3.0-1014.15~18.04.1
  https://launchpad.net/ubuntu/+source/linux-raspi2-5.3/5.3.0-1022.24~18.04.1

Ubuntu 4319-1: Linux kernel vulnerabilities

April 6, 2020
Several security issues were fixed in the Linux kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10: linux-image-5.3.0-1014-oracle 5.3.0-1014.15 linux-image-5.3.0-1015-kvm 5.3.0-1015.16 linux-image-5.3.0-1016-aws 5.3.0-1016.17 linux-image-5.3.0-1017-gcp 5.3.0-1017.18 linux-image-5.3.0-1022-raspi2 5.3.0-1022.24 linux-image-5.3.0-46-generic 5.3.0-46.38 linux-image-5.3.0-46-generic-lpae 5.3.0-46.38 linux-image-5.3.0-46-lowlatency 5.3.0-46.38 linux-image-5.3.0-46-snapdragon 5.3.0-46.38 linux-image-aws 5.3.0.1016.18 linux-image-gcp 5.3.0.1017.18 linux-image-generic 5.3.0.46.39 linux-image-generic-lpae 5.3.0.46.39 linux-image-gke 5.3.0.1017.18 linux-image-kvm 5.3.0.1015.17 linux-image-lowlatency 5.3.0.46.39 linux-image-oracle 5.3.0.1014.15 linux-image-raspi2 5.3.0.1022.19 linux-image-snapdragon 5.3.0.46.39 linux-image-virtual 5.3.0.46.39 Ubuntu 18.04 LTS: linux-image-5.3.0-1014-oracle 5.3.0-1014.15~18.04.1 linux-image-5.3.0-1017-gcp 5.3.0-1017.18~18.04.1 linux-image-5.3.0-1022-raspi2 5.3.0-1022.24~18.04.1 linux-image-5.3.0-46-generic 5.3.0-46.38~18.04.1 linux-image-5.3.0-46-generic-lpae 5.3.0-46.38~18.04.1 linux-image-5.3.0-46-lowlatency 5.3.0-46.38~18.04.1 linux-image-gcp-edge 5.3.0.1017.16 linux-image-generic-hwe-18.04 5.3.0.46.102 linux-image-generic-lpae-hwe-18.04 5.3.0.46.102 linux-image-lowlatency-hwe-18.04 5.3.0.46.102 linux-image-oracle-edge 5.3.0.1014.13 linux-image-raspi2-hwe-18.04 5.3.0.1022.11 linux-image-snapdragon-hwe-18.04 5.3.0.46.102 linux-image-virtual-hwe-18.04 5.3.0.46.102 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.

References

https://ubuntu.com/security/notices/USN-4319-1

CVE-2019-19046, CVE-2020-8428

Severity
April 06, 2020

Package Information

https://launchpad.net/ubuntu/+source/linux/5.3.0-46.38 https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1016.17 https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1017.18 https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1015.16 https://launchpad.net/ubuntu/+source/linux-oracle/5.3.0-1014.15 https://launchpad.net/ubuntu/+source/linux-raspi2/5.3.0-1022.24 https://launchpad.net/ubuntu/+source/linux-gcp-5.3/5.3.0-1017.18~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-46.38~18.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.3/5.3.0-1014.15~18.04.1 https://launchpad.net/ubuntu/+source/linux-raspi2-5.3/5.3.0-1022.24~18.04.1

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