USN-4145-1: Linux kernel vulnerabilities

01 October 2019

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-kvm - Linux kernel for cloud environments
  • linux-raspi2 - Linux kernel for Raspberry Pi 2
  • linux-snapdragon - Linux kernel for Snapdragon processors

Details

It was discovered that a race condition existed in the GFS2 file system in
the Linux kernel. A local attacker could possibly use this to cause a
denial of service (system crash). (CVE-2016-10905)

It was discovered that the IPv6 implementation in the Linux kernel did not
properly validate socket options in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-18509)

It was discovered that the USB gadget Midi driver in the Linux kernel
contained a double-free vulnerability when handling certain error
conditions. A local attacker could use this to cause a denial of service
(system crash). (CVE-2018-20961)

It was discovered that the XFS file system in the Linux kernel did not
properly handle mount failures in some situations. A local attacker could
possibly use this to cause a denial of service (system crash) or execute
arbitrary code. (CVE-2018-20976)

It was discovered that the Intel Wi-Fi device driver in the Linux kernel
did not properly validate certain Tunneled Direct Link Setup (TDLS). A
physically proximate attacker could use this to cause a denial of service
(Wi-Fi disconnect). (CVE-2019-0136)

It was discovered that the Bluetooth UART implementation in the Linux
kernel did not properly check for missing tty operations. A local attacker
could use this to cause a denial of service. (CVE-2019-10207)

It was discovered that an integer overflow existed in the Linux kernel when
reference counting pages, leading to potential use-after-free issues. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2019-11487)

It was discovered that the GTCO tablet input driver in the Linux kernel did
not properly bounds check the initial HID report sent by the device. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-13631)

It was discovered that the Raremono AM/FM/SW radio device driver in the
Linux kernel did not properly allocate memory, leading to a use-after-free.
A physically proximate attacker could use this to cause a denial of service
or possibly execute arbitrary code. (CVE-2019-15211)

It was discovered that a race condition existed in the CPiA2 video4linux
device driver for the Linux kernel, leading to a use-after-free. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-15215)

It was discovered that the Atheros mobile chipset driver in the Linux
kernel did not properly validate data in some situations. An attacker could
use this to cause a denial of service (system crash). (CVE-2019-15926)

Update instructions

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

Ubuntu 16.04

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.

Related notices

  • USN-4069-1: linux-image-generic, linux-image-lowlatency, linux-image-5.0.0-21-lowlatency, linux-kvm, linux-image-5.0.0-1012-azure, linux-image-snapdragon, linux-image-gcp, linux-gcp, linux-image-5.0.0-1011-kvm, linux-image-5.0.0-1017-snapdragon, linux-image-azure, linux-snapdragon, linux-azure, linux-image-5.0.0-1013-raspi2, linux-image-kvm, linux-image-virtual, linux-image-5.0.0-1011-gcp, linux-image-5.0.0-21-generic-lpae, linux-image-raspi2, linux-image-gke, linux, linux-image-aws, linux-image-generic-lpae, linux-aws, linux-raspi2, linux-image-5.0.0-21-generic, linux-image-5.0.0-1011-aws
  • USN-4069-2: linux-image-generic-hwe-18.04, linux-image-lowlatency-hwe-18.04, linux-image-generic-lpae-hwe-18.04, linux-hwe, linux-image-5.0.0-23-lowlatency, linux-image-5.0.0-23-generic-lpae, linux-image-virtual-hwe-18.04, linux-image-5.0.0-23-generic, linux-image-snapdragon-hwe-18.04
  • USN-4115-1: linux-image-generic, linux-image-generic-hwe-16.04, linux-image-lowlatency, linux-image-4.15.0-60-lowlatency, linux-image-gke-4.15, linux-kvm, linux-image-4.15.0-1022-oracle, linux-image-4.15.0-60-generic-lpae, linux-image-powerpc64-smp, linux-image-gcp, linux-gcp, linux-image-virtual-hwe-16.04, linux-image-azure, linux-gke-4.15, linux-image-4.15.0-1044-raspi2, linux-image-4.15.0-60-generic, linux-azure, linux-image-4.15.0-1041-gcp, linux-image-powerpc-smp, linux-image-oem, linux-image-4.15.0-1056-azure, linux-image-lowlatency-hwe-16.04, linux-image-kvm, linux-image-virtual, linux-image-raspi2, linux-image-gke, linux-image-powerpc64-emb, linux-hwe, linux-image-oracle, linux-image-powerpc-e500mc, linux-oracle, linux, linux-image-4.15.0-1043-kvm, linux-image-generic-lpae, linux-raspi2, linux-image-generic-lpae-hwe-16.04, linux-image-4.15.0-1041-gke
  • USN-4118-1: linux-aws, linux-aws-hwe, linux-image-aws-hwe, linux-image-4.15.0-1047-aws, linux-image-aws
  • USN-4144-1: linux-image-generic, linux-image-4.15.0-65-generic, linux-image-generic-hwe-16.04, linux-image-lowlatency, linux-image-4.15.0-1047-kvm, linux-kvm, linux-image-4.15.0-65-generic-lpae, linux-image-powerpc64-smp, linux-image-snapdragon, linux-image-virtual-hwe-16.04, linux-image-azure, linux-snapdragon, linux-aws-hwe, linux-image-4.15.0-65-lowlatency, linux-oem, linux-azure, linux-image-aws-hwe, linux-image-powerpc-smp, linux-image-oem, linux-image-4.15.0-1026-oracle, linux-image-lowlatency-hwe-16.04, linux-image-kvm, linux-image-virtual, linux-image-raspi2, linux-image-powerpc64-emb, linux-hwe, linux-image-oracle, linux-image-powerpc-e500mc, linux-oracle, linux-image-4.15.0-1065-snapdragon, linux, linux-image-aws, linux-image-generic-lpae, linux-aws, linux-image-4.15.0-1048-raspi2, linux-raspi2, linux-image-4.15.0-1060-azure, linux-image-generic-lpae-hwe-16.04, linux-image-4.15.0-1051-aws, linux-image-4.15.0-1057-oem
  • USN-4147-1: linux-image-generic, linux-image-5.0.0-1020-gcp, linux-image-lowlatency, linux-image-5.0.0-1019-kvm, linux-image-generic-hwe-18.04, linux-gke-5.0, linux-image-lowlatency-hwe-18.04, linux-image-generic-lpae-hwe-18.04, linux-kvm, linux-image-5.0.0-1018-aws, linux-image-snapdragon, linux-image-gcp, linux-gcp, linux-image-azure, linux-image-5.0.0-31-lowlatency, linux-snapdragon, linux-image-5.0.0-31-generic, linux-azure, linux-image-virtual-hwe-18.04, linux-image-5.0.0-1020-gke, linux-image-kvm, linux-image-5.0.0-1019-raspi2, linux-image-virtual, linux-image-5.0.0-1023-snapdragon, linux-image-gke-5.0, linux-image-raspi2, linux-image-gke, linux-hwe, linux, linux-image-aws, linux-image-generic-lpae, linux-aws, linux-raspi2, linux-image-5.0.0-1022-azure, linux-image-5.0.0-31-generic-lpae, linux-image-snapdragon-hwe-18.04