==========================================================================
Ubuntu Security Notice USN-4210-1
December 03, 2019

linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gke-4.15, linux-hwe,
linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon
vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 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-gke-4.15: Linux kernel for Google Container Engine (GKE) systems
- linux-kvm: Linux kernel for cloud environments
- linux-oem: Linux kernel for OEM processors
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi2: Linux kernel for Raspberry Pi 2
- linux-snapdragon: Linux kernel for Snapdragon processors
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

It was discovered that a buffer overflow existed in the 802.11 Wi-Fi
configuration interface for the Linux kernel when handling beacon settings.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2019-16746)

Nicolas Waisman discovered that the WiFi driver stack in the Linux kernel
did not properly validate SSID lengths. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2019-17133)

It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel
did not properly deallocate memory in certain error conditions. A local
attacker could use this to cause a denial of service (memory exhaustion).
(CVE-2019-19060)

It was discovered that the Intel OPA Gen1 Infiniband Driver for the Linux
kernel did not properly deallocate memory in certain error conditions. A
local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2019-19065)

It was discovered that the Cascoda CA8210 SPI 802.15.4 wireless controller
driver for the Linux kernel did not properly deallocate memory in certain
error conditions. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2019-19075)

Nicolas Waisman discovered that the Chelsio T4/T5 RDMA Driver for the Linux
kernel performed DMA from a kernel stack. A local attacker could use this
to cause a denial of service (system crash). (CVE-2019-17075)

Update instructions:

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

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1030-oracle  4.15.0-1030.33
  linux-image-4.15.0-1049-gke     4.15.0-1049.52
  linux-image-4.15.0-1051-kvm     4.15.0-1051.51
  linux-image-4.15.0-1052-raspi2  4.15.0-1052.56
  linux-image-4.15.0-1056-aws     4.15.0-1056.58
  linux-image-4.15.0-1065-oem     4.15.0-1065.75
  linux-image-4.15.0-1069-snapdragon  4.15.0-1069.76
  linux-image-4.15.0-72-generic   4.15.0-72.81
  linux-image-4.15.0-72-generic-lpae  4.15.0-72.81
  linux-image-4.15.0-72-lowlatency  4.15.0-72.81
  linux-image-aws                 4.15.0.1056.57
  linux-image-aws-lts-18.04       4.15.0.1056.57
  linux-image-generic             4.15.0.72.74
  linux-image-generic-lpae        4.15.0.72.74
  linux-image-gke                 4.15.0.1049.52
  linux-image-gke-4.15            4.15.0.1049.52
  linux-image-kvm                 4.15.0.1051.51
  linux-image-lowlatency          4.15.0.72.74
  linux-image-oem                 4.15.0.1065.69
  linux-image-oracle              4.15.0.1030.35
  linux-image-oracle-lts-18.04    4.15.0.1030.35
  linux-image-powerpc-e500mc      4.15.0.72.74
  linux-image-powerpc-smp         4.15.0.72.74
  linux-image-powerpc64-emb       4.15.0.72.74
  linux-image-powerpc64-smp       4.15.0.72.74
  linux-image-raspi2              4.15.0.1052.50
  linux-image-snapdragon          4.15.0.1069.72
  linux-image-virtual             4.15.0.72.74

Ubuntu 16.04 LTS:
  linux-image-4.15.0-1030-oracle  4.15.0-1030.33~16.04.1
  linux-image-4.15.0-1050-gcp     4.15.0-1050.53
  linux-image-4.15.0-1056-aws     4.15.0-1056.58~16.04.1
  linux-image-4.15.0-72-generic   4.15.0-72.81~16.04.1
  linux-image-4.15.0-72-generic-lpae  4.15.0-72.81~16.04.1
  linux-image-4.15.0-72-lowlatency  4.15.0-72.81~16.04.1
  linux-image-aws-hwe             4.15.0.1056.56
  linux-image-gcp                 4.15.0.1050.64
  linux-image-generic-hwe-16.04   4.15.0.72.92
  linux-image-generic-lpae-hwe-16.04  4.15.0.72.92
  linux-image-gke                 4.15.0.1050.64
  linux-image-lowlatency-hwe-16.04  4.15.0.72.92
  linux-image-oem                 4.15.0.72.92
  linux-image-oracle              4.15.0.1030.23
  linux-image-virtual-hwe-16.04   4.15.0.72.92

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://usn.ubuntu.com/4210-1
  CVE-2019-16746, CVE-2019-17075, CVE-2019-17133, CVE-2019-19060,
  CVE-2019-19065, CVE-2019-19075

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.15.0-72.81
  https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1056.58
  https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1049.52
  https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1051.51
  https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1065.75
  https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1030.33
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1052.56
  https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1069.76
  https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1056.58~16.04.1
  https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1050.53
  https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-72.81~16.04.1
  https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1030.33~16.04.1