USN-4225-1: Linux kernel vulnerabilities

7 January 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

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