USN-4227-1: Linux kernel vulnerabilities

USN-4227-1: Linux kernel vulnerabilities

linux, linux-aws, linux-aws-hwe, linux-azure, 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-azure – Linux kernel for Microsoft Azure Cloud systems
• linux-gcp – Linux kernel for Google Cloud Platform (GCP) systems
• linux-hwe – Linux hardware enablement (HWE) kernel

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)

It was discovered that the QLogic Fibre Channel driver in the Linux kernel
did not properly check for error, leading to a NULL pointer dereference. A
local attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-16233)

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 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 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 AMD Display Engine Driver in the Linux kernel
did not properly deallocate memory in certain error conditions. A local
attack could use this to cause a denial of service (memory exhaustion).
(CVE-2019-19083)

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)

Update instructions

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

Ubuntu 18.04 LTS

linux-image-4.15.0-1031-oracle – 4.15.0-1031.34

linux-image-4.15.0-1050-gke – 4.15.0-1050.53

linux-image-4.15.0-1052-kvm – 4.15.0-1052.52

linux-image-4.15.0-1053-raspi2 – 4.15.0-1053.57

linux-image-4.15.0-1057-aws – 4.15.0-1057.59

linux-image-4.15.0-1066-oem – 4.15.0-1066.76

linux-image-4.15.0-1070-snapdragon – 4.15.0-1070.77

linux-image-4.15.0-74-generic – 4.15.0-74.84

linux-image-4.15.0-74-generic-lpae – 4.15.0-74.84

linux-image-4.15.0-74-lowlatency – 4.15.0-74.84

linux-image-aws – 4.15.0.1057.58

linux-image-aws-lts-18.04 – 4.15.0.1057.58

linux-image-generic – 4.15.0.74.76

linux-image-generic-lpae – 4.15.0.74.76

linux-image-gke – 4.15.0.1050.53

linux-image-gke-4.15 – 4.15.0.1050.53

linux-image-kvm – 4.15.0.1052.52

linux-image-lowlatency – 4.15.0.74.76

linux-image-oem – 4.15.0.1066.70

linux-image-oracle – 4.15.0.1031.36

linux-image-oracle-lts-18.04 – 4.15.0.1031.36

linux-image-powerpc-e500mc – 4.15.0.74.76

linux-image-powerpc-smp – 4.15.0.74.76

linux-image-powerpc64-emb – 4.15.0.74.76

linux-image-powerpc64-smp – 4.15.0.74.76

linux-image-raspi2 – 4.15.0.1053.51

linux-image-snapdragon – 4.15.0.1070.73

linux-image-virtual – 4.15.0.74.76

Ubuntu 16.04 LTS

linux-image-4.15.0-1031-oracle – 4.15.0-1031.34~16.04.1

linux-image-4.15.0-1052-gcp – 4.15.0-1052.56

linux-image-4.15.0-1057-aws – 4.15.0-1057.59~16.04.1

linux-image-4.15.0-1066-azure – 4.15.0-1066.71

linux-image-4.15.0-74-generic – 4.15.0-74.83~16.04.1

linux-image-4.15.0-74-generic-lpae – 4.15.0-74.83~16.04.1

linux-image-4.15.0-74-lowlatency – 4.15.0-74.83~16.04.1

linux-image-aws-hwe – 4.15.0.1057.57

linux-image-azure – 4.15.0.1066.69

linux-image-azure-edge – 4.15.0.1066.69

linux-image-gcp – 4.15.0.1052.66

linux-image-generic-hwe-16.04 – 4.15.0.74.94

linux-image-generic-lpae-hwe-16.04 – 4.15.0.74.94

linux-image-gke – 4.15.0.1052.66

linux-image-lowlatency-hwe-16.04 – 4.15.0.74.94

linux-image-oem – 4.15.0.74.94

linux-image-oracle – 4.15.0.1031.24

linux-image-virtual-hwe-16.04 – 4.15.0.74.94

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-2019-16233
• CVE-2019-18660
• CVE-2019-19045
• CVE-2019-19052
• CVE-2019-19083
• CVE-2019-19524
• CVE-2019-19529
• CVE-2019-19534
• CVE-2019-19807

Source: USN-4227-1: Linux kernel vulnerabilities