USN-4225-1: Linux kernel vulnerabilities

USN-4225-1: Linux kernel vulnerabilities

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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

• 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

Source: USN-4225-1: Linux kernel vulnerabilities