=========================================================================Ubuntu Security Notice USN-3641-1
May 08, 2018

linux, linux-aws, linux-azure, linux-euclid, linux-gcp, linux-hwe,
linux-kvm, linux-lts-xenial, linux-oem, linux-raspi2, and
linux-snapdragon vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-raspi2: Linux kernel for Raspberry Pi 2
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-euclid: Linux kernel for Intel Euclid systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe: Linux hardware enablement (HWE) kernel
- linux-kvm: Linux kernel for cloud environments
- linux-oem: Linux kernel for OEM processors- linux-snapdragon: Linux kernel for Snapdragon processors- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

Nick Peterson discovered that the Linux kernel did not
properly handle debug exceptions following a MOV/POP to SS
instruction. A local attacker could use this to cause a denial
of service (system crash). This issue only affected the amd64
architecture. (CVE-2018-8897)

Andy Lutomirski discovered that the KVM subsystem of the Linux kernel
did not properly emulate the ICEBP instruction following a MOV/POP
to SS instruction. A local attacker in a KVM virtual machine could
use this to cause a denial of service (guest VM crash) or possibly
escalate privileges inside of the virtual machine. This issue only
affected the i386 and amd64 architectures. (CVE-2018-1087)

Andy Lutomirski discovered that the Linux kernel did not properly
perform error handling on virtualized debug registers. A local
attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2018-1000199)

Update instructions:

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

Ubuntu 17.10:
  linux-image-4.13.0-1019-raspi2  4.13.0-1019.20
  linux-image-4.13.0-41-generic   4.13.0-41.46
  linux-image-4.13.0-41-generic-lpae  4.13.0-41.46
  linux-image-4.13.0-41-lowlatency  4.13.0-41.46
  linux-image-generic             4.13.0.41.44
  linux-image-generic-lpae        4.13.0.41.44
  linux-image-lowlatency          4.13.0.41.44
  linux-image-raspi2              4.13.0.1019.17

Ubuntu 16.04 LTS:
  linux-image-4.13.0-1015-gcp     4.13.0-1015.19
  linux-image-4.13.0-1016-azure   4.13.0-1016.19
  linux-image-4.13.0-1026-oem     4.13.0-1026.29
  linux-image-4.13.0-41-generic   4.13.0-41.46~16.04.1
  linux-image-4.13.0-41-generic-lpae  4.13.0-41.46~16.04.1
  linux-image-4.13.0-41-lowlatency  4.13.0-41.46~16.04.1
  linux-image-4.4.0-1023-kvm      4.4.0-1023.28
  linux-image-4.4.0-1057-aws      4.4.0-1057.66
  linux-image-4.4.0-1089-raspi2   4.4.0-1089.97
  linux-image-4.4.0-1092-snapdragon  4.4.0-1092.97
  linux-image-4.4.0-124-generic   4.4.0-124.148
  linux-image-4.4.0-124-generic-lpae  4.4.0-124.148
  linux-image-4.4.0-124-lowlatency  4.4.0-124.148
  linux-image-4.4.0-124-powerpc-e500mc  4.4.0-124.148
  linux-image-4.4.0-124-powerpc-smp  4.4.0-124.148
  linux-image-4.4.0-124-powerpc64-emb  4.4.0-124.148
  linux-image-4.4.0-124-powerpc64-smp  4.4.0-124.148
  linux-image-4.4.0-9027-euclid   4.4.0-9027.29
  linux-image-aws                 4.4.0.1057.59
  linux-image-azure               4.13.0.1016.17
  linux-image-euclid              4.4.0.9027.28
  linux-image-gcp                 4.13.0.1015.17
  linux-image-generic             4.4.0.124.130
  linux-image-generic-hwe-16.04   4.13.0.41.60
  linux-image-generic-lpae        4.4.0.124.130
  linux-image-generic-lpae-hwe-16.04  4.13.0.41.60
  linux-image-gke                 4.13.0.1015.17
  linux-image-kvm                 4.4.0.1023.22
  linux-image-lowlatency          4.4.0.124.130
  linux-image-lowlatency-hwe-16.04  4.13.0.41.60
  linux-image-oem                 4.13.0.1026.30
  linux-image-powerpc-e500mc      4.4.0.124.130
  linux-image-powerpc-smp         4.4.0.124.130
  linux-image-powerpc64-emb       4.4.0.124.130
  linux-image-powerpc64-smp       4.4.0.124.130
  linux-image-raspi2              4.4.0.1089.89
  linux-image-snapdragon          4.4.0.1092.84

Ubuntu 14.04 LTS:
  linux-image-3.13.0-147-generic  3.13.0-147.196
  linux-image-3.13.0-147-generic-lpae  3.13.0-147.196
  linux-image-3.13.0-147-lowlatency  3.13.0-147.196
  linux-image-3.13.0-147-powerpc-e500  3.13.0-147.196
  linux-image-3.13.0-147-powerpc-e500mc  3.13.0-147.196
  linux-image-3.13.0-147-powerpc-smp  3.13.0-147.196
  linux-image-3.13.0-147-powerpc64-emb  3.13.0-147.196
  linux-image-3.13.0-147-powerpc64-smp  3.13.0-147.196
  linux-image-4.4.0-1019-aws      4.4.0-1019.19
  linux-image-4.4.0-124-generic   4.4.0-124.148~14.04.1
  linux-image-4.4.0-124-generic-lpae  4.4.0-124.148~14.04.1
  linux-image-4.4.0-124-lowlatency  4.4.0-124.148~14.04.1
  linux-image-4.4.0-124-powerpc-e500mc  4.4.0-124.148~14.04.1
  linux-image-4.4.0-124-powerpc-smp  4.4.0-124.148~14.04.1
  linux-image-4.4.0-124-powerpc64-emb  4.4.0-124.148~14.04.1
  linux-image-4.4.0-124-powerpc64-smp  4.4.0-124.148~14.04.1
  linux-image-aws                 4.4.0.1019.19
  linux-image-generic             3.13.0.147.157
  linux-image-generic-lpae        3.13.0.147.157
  linux-image-generic-lpae-lts-xenial  4.4.0.124.104
  linux-image-generic-lts-xenial  4.4.0.124.104
  linux-image-generic-pae         3.13.0.147.157
  linux-image-lowlatency          3.13.0.147.157
  linux-image-lowlatency-lts-xenial  4.4.0.124.104
  linux-image-powerpc-e500        3.13.0.147.157
  linux-image-powerpc-e500mc      3.13.0.147.157
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.124.104
  linux-image-powerpc-smp         3.13.0.147.157
  linux-image-powerpc-smp-lts-xenial  4.4.0.124.104
  linux-image-powerpc64-emb       3.13.0.147.157
  linux-image-powerpc64-emb-lts-xenial  4.4.0.124.104
  linux-image-powerpc64-smp       3.13.0.147.157
  linux-image-powerpc64-smp-lts-xenial  4.4.0.124.104

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:
  https://ubuntu.com/security/notices/USN-3641-1
  CVE-2018-1000199, CVE-2018-1087, CVE-2018-8897

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.13.0-41.46
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.13.0-1019.20
  https://launchpad.net/ubuntu/+source/linux/4.4.0-124.148
  https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1057.66
  https://launchpad.net/ubuntu/+source/linux-azure/4.13.0-1016.19
  https://launchpad.net/ubuntu/+source/linux-euclid/4.4.0-9027.29
  https://launchpad.net/ubuntu/+source/linux-gcp/4.13.0-1015.19
  https://launchpad.net/ubuntu/+source/linux-hwe/4.13.0-41.46~16.04.1
  https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1023.28
  https://launchpad.net/ubuntu/+source/linux-oem/4.13.0-1026.29
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1089.97
  https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1092.97
  https://launchpad.net/ubuntu/+source/linux/3.13.0-147.196
  https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1019.19
  https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-124.148~14.04.1

Ubuntu 3641-1: Linux kernel vulnerabilities

May 8, 2018
Several security issues were fixed in the Linux kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10: linux-image-4.13.0-1019-raspi2 4.13.0-1019.20 linux-image-4.13.0-41-generic 4.13.0-41.46 linux-image-4.13.0-41-generic-lpae 4.13.0-41.46 linux-image-4.13.0-41-lowlatency 4.13.0-41.46 linux-image-generic 4.13.0.41.44 linux-image-generic-lpae 4.13.0.41.44 linux-image-lowlatency 4.13.0.41.44 linux-image-raspi2 4.13.0.1019.17 Ubuntu 16.04 LTS: linux-image-4.13.0-1015-gcp 4.13.0-1015.19 linux-image-4.13.0-1016-azure 4.13.0-1016.19 linux-image-4.13.0-1026-oem 4.13.0-1026.29 linux-image-4.13.0-41-generic 4.13.0-41.46~16.04.1 linux-image-4.13.0-41-generic-lpae 4.13.0-41.46~16.04.1 linux-image-4.13.0-41-lowlatency 4.13.0-41.46~16.04.1 linux-image-4.4.0-1023-kvm 4.4.0-1023.28 linux-image-4.4.0-1057-aws 4.4.0-1057.66 linux-image-4.4.0-1089-raspi2 4.4.0-1089.97 linux-image-4.4.0-1092-snapdragon 4.4.0-1092.97 linux-image-4.4.0-124-generic 4.4.0-124.148 linux-image-4.4.0-124-generic-lpae 4.4.0-124.148 linux-image-4.4.0-124-lowlatency 4.4.0-124.148 linux-image-4.4.0-124-powerpc-e500mc 4.4.0-124.148 linux-image-4.4.0-124-powerpc-smp 4.4.0-124.148 linux-image-4.4.0-124-powerpc64-emb 4.4.0-124.148 linux-image-4.4.0-124-powerpc64-smp 4.4.0-124.148 linux-image-4.4.0-9027-euclid 4.4.0-9027.29 linux-image-aws 4.4.0.1057.59 linux-image-azure 4.13.0.1016.17 linux-image-euclid 4.4.0.9027.28 linux-image-gcp 4.13.0.1015.17 linux-image-generic 4.4.0.124.130 linux-image-generic-hwe-16.04 4.13.0.41.60 linux-image-generic-lpae 4.4.0.124.130 linux-image-generic-lpae-hwe-16.04 4.13.0.41.60 linux-image-gke 4.13.0.1015.17 linux-image-kvm 4.4.0.1023.22 linux-image-lowlatency 4.4.0.124.130 linux-image-lowlatency-hwe-16.04 4.13.0.41.60 linux-image-oem 4.13.0.1026.30 linux-image-powerpc-e500mc 4.4.0.124.130 linux-image-powerpc-smp 4.4.0.124.130 linux-image-powerpc64-emb 4.4.0.124.130 linux-image-powerpc64-smp 4.4.0.124.130 linux-image-raspi2 4.4.0.1089.89 linux-image-snapdragon 4.4.0.1092.84 Ubuntu 14.04 LTS: linux-image-3.13.0-147-generic 3.13.0-147.196 linux-image-3.13.0-147-generic-lpae 3.13.0-147.196 linux-image-3.13.0-147-lowlatency 3.13.0-147.196 linux-image-3.13.0-147-powerpc-e500 3.13.0-147.196 linux-image-3.13.0-147-powerpc-e500mc 3.13.0-147.196 linux-image-3.13.0-147-powerpc-smp 3.13.0-147.196 linux-image-3.13.0-147-powerpc64-emb 3.13.0-147.196 linux-image-3.13.0-147-powerpc64-smp 3.13.0-147.196 linux-image-4.4.0-1019-aws 4.4.0-1019.19 linux-image-4.4.0-124-generic 4.4.0-124.148~14.04.1 linux-image-4.4.0-124-generic-lpae 4.4.0-124.148~14.04.1 linux-image-4.4.0-124-lowlatency 4.4.0-124.148~14.04.1 linux-image-4.4.0-124-powerpc-e500mc 4.4.0-124.148~14.04.1 linux-image-4.4.0-124-powerpc-smp 4.4.0-124.148~14.04.1 linux-image-4.4.0-124-powerpc64-emb 4.4.0-124.148~14.04.1 linux-image-4.4.0-124-powerpc64-smp 4.4.0-124.148~14.04.1 linux-image-aws 4.4.0.1019.19 linux-image-generic 3.13.0.147.157 linux-image-generic-lpae 3.13.0.147.157 linux-image-generic-lpae-lts-xenial 4.4.0.124.104 linux-image-generic-lts-xenial 4.4.0.124.104 linux-image-generic-pae 3.13.0.147.157 linux-image-lowlatency 3.13.0.147.157 linux-image-lowlatency-lts-xenial 4.4.0.124.104 linux-image-powerpc-e500 3.13.0.147.157 linux-image-powerpc-e500mc 3.13.0.147.157 linux-image-powerpc-e500mc-lts-xenial 4.4.0.124.104 linux-image-powerpc-smp 3.13.0.147.157 linux-image-powerpc-smp-lts-xenial 4.4.0.124.104 linux-image-powerpc64-emb 3.13.0.147.157 linux-image-powerpc64-emb-lts-xenial 4.4.0.124.104 linux-image-powerpc64-smp 3.13.0.147.157 linux-image-powerpc64-smp-lts-xenial 4.4.0.124.104 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

https://ubuntu.com/security/notices/USN-3641-1

CVE-2018-1000199, CVE-2018-1087, CVE-2018-8897

Severity
May 08, 2018

Package Information

https://launchpad.net/ubuntu/+source/linux/4.13.0-41.46 https://launchpad.net/ubuntu/+source/linux-raspi2/4.13.0-1019.20 https://launchpad.net/ubuntu/+source/linux/4.4.0-124.148 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1057.66 https://launchpad.net/ubuntu/+source/linux-azure/4.13.0-1016.19 https://launchpad.net/ubuntu/+source/linux-euclid/4.4.0-9027.29 https://launchpad.net/ubuntu/+source/linux-gcp/4.13.0-1015.19 https://launchpad.net/ubuntu/+source/linux-hwe/4.13.0-41.46~16.04.1 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1023.28 https://launchpad.net/ubuntu/+source/linux-oem/4.13.0-1026.29 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1089.97 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1092.97 https://launchpad.net/ubuntu/+source/linux/3.13.0-147.196 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1019.19 https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-124.148~14.04.1

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