=========================================================================
Ubuntu Security Notice USN-4225-1
January 07, 2020

linux, linux-aws, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3,
linux-kvm, linux-oracle, linux-raspi2 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-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-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

Details:

It was discovered that a heap-based buffer overflow existed in the Marvell
WiFi-Ex Driver for the Linux kernel. A physically proximate attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2019-14895, CVE-2019-14901)

It was discovered that a heap-based buffer overflow existed in the Marvell
Libertas WLAN Driver for the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2019-14896, CVE-2019-14897)

It was discovered that the Fujitsu ES network device driver for the Linux
kernel did not properly check for errors in some situations, leading to a
NULL pointer dereference. A local attacker could use this to cause a denial
of service. (CVE-2019-16231)

Anthony Steinhauser discovered that the Linux kernel did not properly
perform Spectre_RSB mitigations to all processors for PowerPC architecture
systems in some situations. A local attacker could use this to expose
sensitive information. (CVE-2019-18660)

It was discovered that the Broadcom V3D DRI driver in the Linux kernel did
not properly deallocate memory in certain error conditions. A local
attacker could possibly use this to cause a denial of service (kernel
memory exhaustion). (CVE-2019-19044)

It was discovered that the Mellanox Technologies Innova driver in the Linux
kernel did not properly deallocate memory in certain failure conditions. A
local attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2019-19045)

It was discovered that the Mellanox Technologies ConnectX driver in the
Linux kernel did not properly deallocate memory in certain failure
conditions. A local attacker could use this to cause a denial of service
(kernel memory exhaustion). (CVE-2019-19047)

It was discovered that the Intel WiMAX 2400 driver 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-2019-19051)

It was discovered that Geschwister Schneider USB CAN interface driver in
the Linux kernel did not properly deallocate memory in certain failure
conditions. A physically proximate attacker could use this to cause a
denial of service (kernel memory exhaustion). (CVE-2019-19052)

It was discovered that the netlink-based 802.11 configuration interface in
the Linux kernel did not deallocate memory in certain error conditions. A
local attacker could possibly use this to cause a denial of service (kernel
memory exhaustion). (CVE-2019-19055)

It was discovered that the event tracing subsystem of the Linux kernel did
not properly deallocate memory in certain error conditions. A local
attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2019-19072)

It was discovered that the driver for memoryless force-feedback input
devices in the Linux kernel contained a use-after-free vulnerability. A
physically proximate attacker could possibly use this to cause a denial of
service (system crash) or execute arbitrary code. (CVE-2019-19524)

It was discovered that the Microchip CAN BUS Analyzer driver in the Linux
kernel contained a use-after-free vulnerability on device disconnect. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-19529)

It was discovered that the PEAK-System Technik USB driver in the Linux
kernel did not properly sanitize memory before sending it to the device. A
physically proximate attacker could use this to expose sensitive
information (kernel memory). (CVE-2019-19534)

Tristan Madani discovered that the ALSA timer implementation 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 execute
arbitrary code. (CVE-2019-19807)

It was discovered that the DesignWare USB3 controller driver in the Linux
kernel did not properly deallocate memory in some error conditions. A local
attacker could possibly use this to cause a denial of service (memory
exhaustion). (CVE-2019-18813)

Update instructions:

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

Ubuntu 19.10:
  linux-image-5.3.0-1008-oracle   5.3.0-1008.9
  linux-image-5.3.0-1009-aws      5.3.0-1009.10
  linux-image-5.3.0-1009-azure    5.3.0-1009.10
  linux-image-5.3.0-1009-kvm      5.3.0-1009.10
  linux-image-5.3.0-1011-gcp      5.3.0-1011.12
  linux-image-5.3.0-1015-raspi2   5.3.0-1015.17
  linux-image-5.3.0-26-generic    5.3.0-26.28
  linux-image-5.3.0-26-generic-lpae  5.3.0-26.28
  linux-image-5.3.0-26-lowlatency  5.3.0-26.28
  linux-image-5.3.0-26-snapdragon  5.3.0-26.28
  linux-image-aws                 5.3.0.1009.11
  linux-image-azure               5.3.0.1009.27
  linux-image-gcp                 5.3.0.1011.12
  linux-image-generic             5.3.0.26.30
  linux-image-generic-lpae        5.3.0.26.30
  linux-image-gke                 5.3.0.1011.12
  linux-image-kvm                 5.3.0.1009.11
  linux-image-lowlatency          5.3.0.26.30
  linux-image-oracle              5.3.0.1008.9
  linux-image-raspi2              5.3.0.1015.12
  linux-image-snapdragon          5.3.0.26.30
  linux-image-virtual             5.3.0.26.30

Ubuntu 18.04 LTS:
  linux-image-5.3.0-1009-azure    5.3.0-1009.10~18.04.1
  linux-image-5.3.0-1010-gcp      5.3.0-1010.11~18.04.1
  linux-image-azure-edge          5.3.0.1009.9
  linux-image-gcp-edge            5.3.0.1010.10

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/4225-1
  CVE-2019-14895, CVE-2019-14896, CVE-2019-14897, CVE-2019-14901,
  CVE-2019-16231, CVE-2019-18660, CVE-2019-18813, CVE-2019-19044,
  CVE-2019-19045, CVE-2019-19047, CVE-2019-19051, CVE-2019-19052,
  CVE-2019-19055, CVE-2019-19072, CVE-2019-19524, CVE-2019-19529,
  CVE-2019-19534, CVE-2019-19807

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.3.0-26.28
  https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1009.10
  https://launchpad.net/ubuntu/+source/linux-azure/5.3.0-1009.10
  https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1011.12
  https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1009.10
  https://launchpad.net/ubuntu/+source/linux-oracle/5.3.0-1008.9
  https://launchpad.net/ubuntu/+source/linux-raspi2/5.3.0-1015.17
  https://launchpad.net/ubuntu/+source/linux-azure-5.3/5.3.0-1009.10~18.04.1
  https://launchpad.net/ubuntu/+source/linux-gcp-5.3/5.3.0-1010.11~18.04.1