Ubuntu 4041-1 Moderate: Linux Kernel Update Addresses DoS Risk

ubuntu

June 29, 2019

Several security issues were fixed in the Linux kernel.

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-raspi2: Linux kernel for Raspberry Pi 2

- linux-snapdragon: Linux kernel for Snapdragon processors- linux-gke-4.15: Linux kernel for Google Container Engine (GKE) systems

- linux-hwe: Linux hardware enablement (HWE) kernel

- linux-oem: Linux kernel for OEM processors- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems

Details:

USN-4017-1 fixed vulnerabilities in the Linux kernel for Ubuntu.

Unfortunately, the update introduced a regression that interfered with

networking applications that setup very low SO_SNDBUF values. This

update fixes the problem.

We apologize...

Read the Full Advisory

Topics Covered

security advisory denial of service update ubuntu linux kernel networking issue

Update Instructions

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

Ubuntu 19.04:
  linux-image-5.0.0-1010-aws      5.0.0-1010.11
  linux-image-5.0.0-1010-azure    5.0.0-1010.10
  linux-image-5.0.0-1010-gcp      5.0.0-1010.10
  linux-image-5.0.0-1010-kvm      5.0.0-1010.11
  linux-image-5.0.0-1012-raspi2   5.0.0-1012.12
  linux-image-5.0.0-1016-snapdragon  5.0.0-1016.17
  linux-image-5.0.0-20-generic    5.0.0-20.21
  linux-image-5.0.0-20-generic-lpae  5.0.0-20.21
  linux-image-5.0.0-20-lowlatency  5.0.0-20.21
  linux-image-aws                 5.0.0.1010.10
  linux-image-azure               5.0.0.1010.9
  linux-image-gcp                 5.0.0.1010.10
  linux-image-generic             5.0.0.20.21
  linux-image-generic-lpae        5.0.0.20.21
  linux-image-gke                 5.0.0.1010.10
  linux-image-kvm                 5.0.0.1010.10
  linux-image-lowlatency          5.0.0.20.21
  linux-image-raspi2              5.0.0.1012.9
  linux-image-snapdragon          5.0.0.1016.9
  linux-image-virtual             5.0.0.20.21

Ubuntu 18.10:
  linux-image-4.18.0-1015-gcp     4.18.0-1015.16
  linux-image-4.18.0-1016-kvm     4.18.0-1016.17
  linux-image-4.18.0-1018-raspi2  4.18.0-1018.21
  linux-image-4.18.0-1020-aws     4.18.0-1020.24
  linux-image-4.18.0-1023-azure   4.18.0-1023.24
  linux-image-4.18.0-25-generic   4.18.0-25.26
  linux-image-4.18.0-25-generic-lpae  4.18.0-25.26
  linux-image-4.18.0-25-lowlatency  4.18.0-25.26
  linux-image-4.18.0-25-snapdragon  4.18.0-25.26
  linux-image-aws                 4.18.0.1020.20
  linux-image-azure               4.18.0.1023.25
  linux-image-gcp                 4.18.0.1015.15
  linux-image-generic             4.18.0.25.26
  linux-image-generic-lpae        4.18.0.25.26
  linux-image-gke                 4.18.0.1015.15
  linux-image-kvm                 4.18.0.1016.16
  linux-image-lowlatency          4.18.0.25.26
  linux-image-powerpc-e500mc      4.18.0.25.26
  linux-image-powerpc-smp         4.18.0.25.26
  linux-image-powerpc64-emb       4.18.0.25.26
  linux-image-powerpc64-smp       4.18.0.25.26
  linux-image-raspi2              4.18.0.1018.15
  linux-image-snapdragon          4.18.0.25.26
  linux-image-virtual             4.18.0.25.26

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1017-oracle  4.15.0-1017.19
  linux-image-4.15.0-1036-gcp     4.15.0-1036.38
  linux-image-4.15.0-1036-gke     4.15.0-1036.38
  linux-image-4.15.0-1038-kvm     4.15.0-1038.38
  linux-image-4.15.0-1040-raspi2  4.15.0-1040.43
  linux-image-4.15.0-1043-aws     4.15.0-1043.45
  linux-image-4.15.0-1045-oem     4.15.0-1045.50
  linux-image-4.15.0-1057-snapdragon  4.15.0-1057.62
  linux-image-4.15.0-54-generic   4.15.0-54.58
  linux-image-4.15.0-54-generic-lpae  4.15.0-54.58
  linux-image-4.15.0-54-lowlatency  4.15.0-54.58
  linux-image-4.18.0-1023-azure   4.18.0-1023.24~18.04.1
  linux-image-4.18.0-25-generic   4.18.0-25.26~18.04.1
  linux-image-4.18.0-25-generic-lpae  4.18.0-25.26~18.04.1
  linux-image-4.18.0-25-lowlatency  4.18.0-25.26~18.04.1
  linux-image-4.18.0-25-snapdragon  4.18.0-25.26~18.04.1
  linux-image-aws                 4.15.0.1043.42
  linux-image-azure               4.18.0.1023.21
  linux-image-gcp                 4.15.0.1036.38
  linux-image-generic             4.15.0.54.56
  linux-image-generic-hwe-18.04   4.18.0.25.74
  linux-image-generic-lpae        4.15.0.54.56
  linux-image-generic-lpae-hwe-18.04  4.18.0.25.74
  linux-image-gke                 4.15.0.1036.39
  linux-image-gke-4.15            4.15.0.1036.39
  linux-image-kvm                 4.15.0.1038.38
  linux-image-lowlatency          4.15.0.54.56
  linux-image-lowlatency-hwe-18.04  4.18.0.25.74
  linux-image-oem                 4.15.0.1045.49
  linux-image-oracle              4.15.0.1017.20
  linux-image-powerpc-e500mc      4.15.0.54.56
  linux-image-powerpc-smp         4.15.0.54.56
  linux-image-powerpc64-emb       4.15.0.54.56
  linux-image-powerpc64-smp       4.15.0.54.56
  linux-image-raspi2              4.15.0.1040.38
  linux-image-snapdragon          4.15.0.1057.60
  linux-image-snapdragon-hwe-18.04  4.18.0.25.74
  linux-image-virtual             4.15.0.54.56
  linux-image-virtual-hwe-18.04   4.18.0.25.74

Ubuntu 16.04 LTS:
  linux-image-4.15.0-1017-oracle  4.15.0-1017.19~16.04.2
  linux-image-4.15.0-1036-gcp     4.15.0-1036.38~16.04.1
  linux-image-4.15.0-1043-aws     4.15.0-1043.45~16.04.1
  linux-image-4.15.0-1049-azure   4.15.0-1049.54
  linux-image-4.15.0-54-generic   4.15.0-54.58~16.04.1
  linux-image-4.15.0-54-generic-lpae  4.15.0-54.58~16.04.1
  linux-image-4.15.0-54-lowlatency  4.15.0-54.58~16.04.1
  linux-image-4.4.0-1051-kvm      4.4.0-1051.58
  linux-image-4.4.0-1087-aws      4.4.0-1087.98
  linux-image-4.4.0-1114-raspi2   4.4.0-1114.123
  linux-image-4.4.0-1118-snapdragon  4.4.0-1118.124
  linux-image-4.4.0-154-generic   4.4.0-154.181
  linux-image-4.4.0-154-generic-lpae  4.4.0-154.181
  linux-image-4.4.0-154-lowlatency  4.4.0-154.181
  linux-image-4.4.0-154-powerpc-e500mc  4.4.0-154.181
  linux-image-4.4.0-154-powerpc-smp  4.4.0-154.181
  linux-image-4.4.0-154-powerpc64-emb  4.4.0-154.181
  linux-image-4.4.0-154-powerpc64-smp  4.4.0-154.181
  linux-image-aws                 4.4.0.1087.90
  linux-image-aws-hwe             4.15.0.1043.43
  linux-image-azure               4.15.0.1049.52
  linux-image-gcp                 4.15.0.1036.50
  linux-image-generic             4.4.0.154.162
  linux-image-generic-hwe-16.04   4.15.0.54.75
  linux-image-generic-lpae        4.4.0.154.162
  linux-image-generic-lpae-hwe-16.04  4.15.0.54.75
  linux-image-gke                 4.15.0.1036.50
  linux-image-kvm                 4.4.0.1051.51
  linux-image-lowlatency          4.4.0.154.162
  linux-image-lowlatency-hwe-16.04  4.15.0.54.75
  linux-image-oem                 4.15.0.54.75
  linux-image-oracle              4.15.0.1017.11
  linux-image-powerpc-e500mc      4.4.0.154.162
  linux-image-powerpc-smp         4.4.0.154.162
  linux-image-powerpc64-emb       4.4.0.154.162
  linux-image-powerpc64-smp       4.4.0.154.162
  linux-image-raspi2              4.4.0.1114.114
  linux-image-snapdragon          4.4.0.1118.110
  linux-image-virtual             4.4.0.154.162
  linux-image-virtual-hwe-16.04   4.15.0.54.75

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.