USN-4095-1: Linux kernel vulnerabilities

Releases

• Ubuntu 16.04 ESM

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

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

• linux-image-4.4.0-1054-kvm - 4.4.0-1054.61
• linux-image-4.4.0-1090-aws - 4.4.0-1090.101
• linux-image-4.4.0-1118-raspi2 - 4.4.0-1118.127
• linux-image-4.4.0-1122-snapdragon - 4.4.0-1122.128
• linux-image-4.4.0-159-generic - 4.4.0-159.187
• linux-image-4.4.0-159-generic-lpae - 4.4.0-159.187
• linux-image-4.4.0-159-lowlatency - 4.4.0-159.187
• linux-image-4.4.0-159-powerpc-e500mc - 4.4.0-159.187
• linux-image-4.4.0-159-powerpc-smp - 4.4.0-159.187
• linux-image-4.4.0-159-powerpc64-emb - 4.4.0-159.187
• linux-image-4.4.0-159-powerpc64-smp - 4.4.0-159.187
• linux-image-aws - 4.4.0.1090.94
• linux-image-generic - 4.4.0.159.167
• linux-image-generic-lpae - 4.4.0.159.167
• linux-image-kvm - 4.4.0.1054.54
• linux-image-lowlatency - 4.4.0.159.167
• linux-image-powerpc-e500mc - 4.4.0.159.167
• linux-image-powerpc-smp - 4.4.0.159.167
• linux-image-powerpc64-emb - 4.4.0.159.167
• linux-image-powerpc64-smp - 4.4.0.159.167
• linux-image-raspi2 - 4.4.0.1118.118
• linux-image-snapdragon - 4.4.0.1122.114
• linux-image-virtual - 4.4.0.159.167

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-2018-5383
• CVE-2019-10126
• CVE-2019-1125
• CVE-2019-11599
• CVE-2019-12614
• CVE-2019-13272
• CVE-2019-3846
• CVE-2019-9503

Related notices

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