USN-4095-1: Linux kernel vulnerabilities

13 August 2019

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Eli Biham and Lior Neumann discovered that the Bluetooth implementation in
the Linux kernel did not properly validate elliptic curve parameters during
Diffie-Hellman key exchange in some situations. An attacker could use this
to expose sensitive information. (CVE-2018-5383)

It was discovered that a heap buffer overflow existed in the Marvell
Wireless LAN device driver for the Linux kernel. An attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2019-10126)

Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors
incorrectly handle SWAPGS instructions during speculative execution. A
local attacker could use this to expose sensitive information (kernel
memory). (CVE-2019-1125)

Jann Horn discovered that a race condition existed in the Linux kernel when
performing core dumps. A local attacker could use this to cause a denial of
service (system crash) or expose sensitive information. (CVE-2019-11599)

It was discovered that the PowerPC dlpar implementation in the Linux kernel
did not properly check for allocation errors in some situations. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-12614)

Jann Horn discovered that the ptrace implementation in the Linux kernel did
not properly record credentials in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2019-13272)

It was discovered that the Marvell Wireless LAN device driver in the Linux
kernel did not properly validate the BSS descriptor. A local attacker could
possibly use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2019-3846)

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-3981-1: linux-image-4.15.0-1013-oracle, linux-image-powerpc-smp, linux-image-powerpc64-emb, linux-image-snapdragon, linux-image-4.15.0-1038-oem, linux-snapdragon, linux-image-raspi2, linux-image-generic, linux-image-generic-lpae, linux-image-oracle, linux-image-4.15.0-1034-kvm, linux-image-4.15.0-1036-raspi2, linux-kvm, linux-oracle, linux-oem, linux-image-4.15.0-50-generic-lpae, linux-image-4.15.0-1053-snapdragon, linux-raspi2, linux-image-4.15.0-1039-aws, linux-image-virtual, linux-image-kvm, linux-image-gcp, linux-image-aws, linux-image-oem, linux-image-4.15.0-50-lowlatency, linux-image-powerpc-e500mc, linux-image-4.15.0-50-generic, linux-image-lowlatency, linux-image-4.15.0-1032-gcp, linux-aws, linux-gcp, linux-image-4.15.0-50-snapdragon, linux-image-powerpc64-smp, linux
  • USN-4118-1: linux-aws, linux-image-aws-hwe, linux-aws-hwe, linux-image-aws, linux-image-4.15.0-1047-aws
  • USN-3981-2: linux-image-4.15.0-1013-oracle, linux-image-4.15.0-1045-azure, linux-image-oracle, linux-image-gke, linux-image-generic-hwe-16.04, linux-oracle, linux-image-azure, linux-image-4.15.0-50-generic-lpae, linux-image-generic-lpae-hwe-16.04, linux-image-virtual-hwe-16.04, linux-azure, linux-image-gcp, linux-image-oem, linux-image-4.15.0-50-lowlatency, linux-image-4.15.0-50-generic, linux-image-lowlatency-hwe-16.04, linux-gcp, linux-image-4.15.0-1032-gcp, linux-hwe
  • USN-4093-1: linux-image-snapdragon, linux-snapdragon, linux-image-raspi2, linux-image-lowlatency-hwe-18.04, linux-image-generic, linux-image-generic-lpae, linux-image-gke, linux-image-snapdragon-hwe-18.04, linux-image-virtual-hwe-18.04, linux-kvm, linux-image-5.0.0-1013-kvm, linux-image-azure, linux-image-generic-hwe-18.04, linux-image-5.0.0-25-generic-lpae, linux-raspi2, linux-image-5.0.0-25-lowlatency, linux-azure, linux-image-5.0.0-1018-snapdragon, linux-image-virtual, linux-image-kvm, linux-image-gcp, linux-image-5.0.0-1014-azure, linux-image-5.0.0-1014-raspi2, linux-image-lowlatency, linux-image-5.0.0-25-generic, linux-gcp, linux-image-5.0.0-1013-gcp, linux-image-generic-lpae-hwe-18.04, linux-hwe, linux
  • USN-4094-1: linux-image-4.15.0-1055-azure, linux-image-powerpc-smp, linux-image-powerpc64-emb, linux-image-snapdragon, linux-snapdragon, linux-image-raspi2, linux-gke-4.15, linux-image-4.15.0-1040-gcp, linux-image-generic, linux-image-generic-lpae, linux-image-oracle, linux-image-gke, linux-image-4.15.0-1040-gke, linux-image-generic-hwe-16.04, linux-kvm, linux-oracle, linux-image-4.15.0-1050-oem, linux-oem, linux-image-4.15.0-1042-kvm, linux-image-4.15.0-58-lowlatency, linux-image-azure, linux-image-generic-lpae-hwe-16.04, linux-image-4.15.0-1060-snapdragon, linux-image-4.15.0-58-generic-lpae, linux-image-gke-4.15, linux-image-virtual-hwe-16.04, linux-raspi2, linux-azure, linux-image-virtual, linux-image-kvm, linux-image-gcp, linux-image-powerpc-e500mc, linux-image-oem, linux-image-lowlatency, linux-image-lowlatency-hwe-16.04, linux-image-4.15.0-58-generic, linux-hwe, linux-gcp, linux-image-4.15.0-1043-raspi2, linux-image-powerpc64-smp, linux-image-4.15.0-1021-oracle, linux
  • USN-4115-1: linux-image-powerpc-smp, linux-image-powerpc64-emb, linux-image-4.15.0-1022-oracle, linux-image-4.15.0-1041-gcp, linux-image-raspi2, linux-image-4.15.0-1044-raspi2, linux-gke-4.15, linux-image-generic, linux-image-generic-lpae, linux-image-oracle, linux-image-gke, linux-image-generic-hwe-16.04, linux-kvm, linux-image-4.15.0-60-generic-lpae, linux-oracle, linux-image-azure, linux-image-generic-lpae-hwe-16.04, linux-image-4.15.0-1043-kvm, linux-raspi2, linux-image-gke-4.15, linux-image-virtual-hwe-16.04, linux-image-4.15.0-1041-gke, linux-azure, linux-image-4.15.0-60-generic, linux-image-virtual, linux-image-kvm, linux-image-gcp, linux-image-powerpc-e500mc, linux-image-oem, linux-image-lowlatency, linux-image-lowlatency-hwe-16.04, linux-image-4.15.0-60-lowlatency, linux-image-4.15.0-1056-azure, linux-gcp, linux-image-powerpc64-smp, linux-hwe, linux
  • USN-4076-1: linux-image-powerpc-smp, linux-image-powerpc64-emb, linux-image-4.4.0-157-powerpc-smp, linux-image-4.4.0-157-lowlatency, linux-image-raspi2, linux-image-generic, linux-image-4.4.0-1052-kvm, linux-image-generic-lpae, linux-kvm, linux-image-4.4.0-157-powerpc-e500mc, linux-raspi2, linux-image-4.4.0-157-powerpc64-smp, linux-image-virtual, linux-image-4.4.0-157-generic, linux-image-kvm, linux-image-4.4.0-157-powerpc64-emb, linux-image-powerpc-e500mc, linux-image-aws, linux-image-4.4.0-1117-raspi2, linux-image-lowlatency, linux-image-4.4.0-157-generic-lpae, linux-aws, linux-image-4.4.0-1088-aws, linux-image-powerpc64-smp, linux
  • USN-4069-2: linux-image-snapdragon-hwe-18.04, linux-image-5.0.0-23-generic-lpae, linux-image-virtual-hwe-18.04, linux-image-5.0.0-23-lowlatency, linux-image-generic-lpae-hwe-18.04, linux-image-lowlatency-hwe-18.04, linux-hwe, linux-image-generic-hwe-18.04, linux-image-5.0.0-23-generic
  • USN-3979-1: linux-image-5.0.0-1008-raspi2, linux-image-raspi2, linux-image-5.0.0-15-generic-lpae, linux-image-generic, linux-image-generic-lpae, linux-image-5.0.0-1006-azure, linux-image-gke, linux-kvm, linux-image-5.0.0-1006-aws, linux-image-azure, linux-raspi2, linux-image-5.0.0-1006-gcp, linux-azure, linux-image-virtual, linux-image-kvm, linux-image-5.0.0-1006-kvm, linux-image-gcp, linux-image-aws, linux-image-lowlatency, linux-image-5.0.0-15-lowlatency, linux-aws, linux-gcp, linux-image-5.0.0-15-generic, linux
  • USN-4351-1: linux-firmware
  • USN-4096-1: linux-image-5.0.0-1012-aws, linux-aws, linux-image-aws-hwe, linux-aws-hwe, linux-image-aws, linux-image-4.15.0-1045-aws
  • USN-4095-2: linux-image-powerpc-e500mc-lts-xenial, linux-image-powerpc64-emb-lts-xenial, linux-image-4.4.0-159-generic-lpae, linux-image-4.4.0-159-lowlatency, linux-image-4.4.0-159-generic, linux-image-virtual-lts-xenial, linux-image-4.4.0-159-powerpc-e500mc, linux-image-generic-lpae-lts-xenial, linux-image-lowlatency-lts-xenial, linux-image-4.4.0-1050-aws, linux-image-4.4.0-159-powerpc-smp, linux-lts-xenial, linux-image-4.4.0-159-powerpc64-smp, linux-image-aws, linux-image-4.4.0-159-powerpc64-emb, linux-image-powerpc64-smp-lts-xenial, linux-image-generic-lts-xenial, linux-aws, linux-image-powerpc-smp-lts-xenial
  • USN-3980-2: linux-azure, linux-image-4.18.0-20-lowlatency, linux-image-4.18.0-20-generic-lpae, linux-image-lowlatency-hwe-18.04, linux-image-snapdragon-hwe-18.04, linux-image-4.18.0-20-generic, linux-image-virtual-hwe-18.04, linux-image-4.18.0-20-snapdragon, linux-image-generic-lpae-hwe-18.04, linux-image-azure, linux-hwe, linux-image-generic-hwe-18.04, linux-image-4.18.0-1018-azure
  • USN-4069-1: linux-image-5.0.0-1017-snapdragon, linux-image-5.0.0-21-generic, linux-image-snapdragon, linux-snapdragon, linux-image-5.0.0-1012-azure, linux-image-raspi2, linux-image-5.0.0-1011-aws, linux-image-generic, linux-image-generic-lpae, linux-image-gke, linux-kvm, linux-image-5.0.0-1013-raspi2, linux-image-azure, linux-raspi2, linux-image-5.0.0-21-generic-lpae, linux-azure, linux-image-virtual, linux-image-kvm, linux-image-gcp, linux-image-aws, linux-image-5.0.0-21-lowlatency, linux-image-lowlatency, linux-image-5.0.0-1011-gcp, linux-image-5.0.0-1011-kvm, linux-aws, linux-gcp, linux
  • USN-4117-1: linux-image-5.0.0-1014-aws, linux-aws, linux-image-aws
  • USN-3980-1: linux-image-powerpc-smp, linux-image-4.18.0-20-lowlatency, linux-image-powerpc64-emb, linux-image-snapdragon, linux-image-raspi2, linux-image-4.18.0-20-snapdragon, linux-image-4.18.0-1014-raspi2, linux-image-4.18.0-1016-aws, linux-image-generic, linux-image-generic-lpae, linux-image-gke, linux-kvm, linux-image-azure, linux-image-4.18.0-1018-azure, linux-raspi2, linux-azure, linux-image-4.18.0-20-generic-lpae, linux-image-virtual, linux-image-kvm, linux-image-gcp, linux-image-aws, linux-image-powerpc-e500mc, linux-image-lowlatency, linux-image-4.18.0-1011-gcp, linux-aws, linux-image-4.18.0-20-generic, linux-gcp, linux-image-4.18.0-1012-kvm, linux-image-powerpc64-smp, linux