Ubuntu 19.04 LTS Security Advisory USN-4135-1 Moderate: Kernel Issues

ubuntu

September 18, 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-gke-5.0: 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:

Peter Pi discovered a buffer overflow in the virtio network backend

(vhost_net) implementation in the Linux kernel. An attacker in a guest may

be able to use this to caus...

Read the Full Advisory

Topics Covered

security advisory denial of service buffer overflow local attack ubuntu linux kernel cloud environments

Update Instructions

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

Ubuntu 19.04:
  linux-image-5.0.0-1016-aws      5.0.0-1016.18
  linux-image-5.0.0-1017-gcp      5.0.0-1017.17
  linux-image-5.0.0-1017-kvm      5.0.0-1017.18
  linux-image-5.0.0-1017-raspi2   5.0.0-1017.17
  linux-image-5.0.0-1020-azure    5.0.0-1020.21
  linux-image-5.0.0-1021-snapdragon  5.0.0-1021.22
  linux-image-5.0.0-29-generic    5.0.0-29.31
  linux-image-5.0.0-29-generic-lpae  5.0.0-29.31
  linux-image-5.0.0-29-lowlatency  5.0.0-29.31
  linux-image-aws                 5.0.0.1016.17
  linux-image-azure               5.0.0.1020.19
  linux-image-gcp                 5.0.0.1017.43
  linux-image-generic             5.0.0.29.30
  linux-image-generic-lpae        5.0.0.29.30
  linux-image-gke                 5.0.0.1017.43
  linux-image-kvm                 5.0.0.1017.17
  linux-image-lowlatency          5.0.0.29.30
  linux-image-raspi2              5.0.0.1017.14
  linux-image-snapdragon          5.0.0.1021.14
  linux-image-virtual             5.0.0.29.30

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1025-oracle  4.15.0-1025.28
  linux-image-4.15.0-1044-gcp     4.15.0-1044.70
  linux-image-4.15.0-1044-gke     4.15.0-1044.46
  linux-image-4.15.0-1046-kvm     4.15.0-1046.46
  linux-image-4.15.0-1047-raspi2  4.15.0-1047.51
  linux-image-4.15.0-1050-aws     4.15.0-1050.52
  linux-image-4.15.0-1056-oem     4.15.0-1056.65
  linux-image-4.15.0-1064-snapdragon  4.15.0-1064.71
  linux-image-4.15.0-64-generic   4.15.0-64.73
  linux-image-4.15.0-64-generic-lpae  4.15.0-64.73
  linux-image-4.15.0-64-lowlatency  4.15.0-64.73
  linux-image-5.0.0-1017-gke      5.0.0-1017.17~18.04.1
  linux-image-5.0.0-1020-azure    5.0.0-1020.21~18.04.1
  linux-image-5.0.0-29-generic    5.0.0-29.31~18.04.1
  linux-image-5.0.0-29-generic-lpae  5.0.0-29.31~18.04.1
  linux-image-5.0.0-29-lowlatency  5.0.0-29.31~18.04.1
  linux-image-aws                 4.15.0.1050.49
  linux-image-azure               5.0.0.1020.30
  linux-image-gcp                 4.15.0.1044.70
  linux-image-generic             4.15.0.64.66
  linux-image-generic-hwe-18.04   5.0.0.29.86
  linux-image-generic-lpae        4.15.0.64.66
  linux-image-generic-lpae-hwe-18.04  5.0.0.29.86
  linux-image-gke                 4.15.0.1044.47
  linux-image-gke-4.15            4.15.0.1044.47
  linux-image-gke-5.0             5.0.0.1017.7
  linux-image-kvm                 4.15.0.1046.46
  linux-image-lowlatency          4.15.0.64.66
  linux-image-lowlatency-hwe-18.04  5.0.0.29.86
  linux-image-oem                 4.15.0.1056.60
  linux-image-oracle              4.15.0.1025.28
  linux-image-powerpc-e500mc      4.15.0.64.66
  linux-image-powerpc-smp         4.15.0.64.66
  linux-image-powerpc64-emb       4.15.0.64.66
  linux-image-powerpc64-smp       4.15.0.64.66
  linux-image-raspi2              4.15.0.1047.45
  linux-image-snapdragon          4.15.0.1064.67
  linux-image-snapdragon-hwe-18.04  5.0.0.29.86
  linux-image-virtual             4.15.0.64.66
  linux-image-virtual-hwe-18.04   5.0.0.29.86

Ubuntu 16.04 LTS:
  linux-image-4.15.0-1025-oracle  4.15.0-1025.28~16.04.1
  linux-image-4.15.0-1044-gcp     4.15.0-1044.46
  linux-image-4.15.0-1050-aws     4.15.0-1050.52~16.04.1
  linux-image-4.15.0-1059-azure   4.15.0-1059.64
  linux-image-4.15.0-64-generic   4.15.0-64.73~16.04.1
  linux-image-4.15.0-64-generic-lpae  4.15.0-64.73~16.04.1
  linux-image-4.15.0-64-lowlatency  4.15.0-64.73~16.04.1
  linux-image-4.4.0-1058-kvm      4.4.0-1058.65
  linux-image-4.4.0-1094-aws      4.4.0-1094.105
  linux-image-4.4.0-1122-raspi2   4.4.0-1122.131
  linux-image-4.4.0-1126-snapdragon  4.4.0-1126.132
  linux-image-4.4.0-164-generic   4.4.0-164.192
  linux-image-4.4.0-164-generic-lpae  4.4.0-164.192
  linux-image-4.4.0-164-lowlatency  4.4.0-164.192
  linux-image-4.4.0-164-powerpc-e500mc  4.4.0-164.192
  linux-image-4.4.0-164-powerpc-smp  4.4.0-164.192
  linux-image-4.4.0-164-powerpc64-emb  4.4.0-164.192
  linux-image-4.4.0-164-powerpc64-smp  4.4.0-164.192
  linux-image-aws                 4.4.0.1094.98
  linux-image-aws-hwe             4.15.0.1050.50
  linux-image-azure               4.15.0.1059.62
  linux-image-gcp                 4.15.0.1044.58
  linux-image-generic             4.4.0.164.172
  linux-image-generic-hwe-16.04   4.15.0.64.84
  linux-image-generic-lpae        4.4.0.164.172
  linux-image-generic-lpae-hwe-16.04  4.15.0.64.84
  linux-image-gke                 4.15.0.1044.58
  linux-image-kvm                 4.4.0.1058.58
  linux-image-lowlatency          4.4.0.164.172
  linux-image-lowlatency-hwe-16.04  4.15.0.64.84
  linux-image-oem                 4.15.0.64.84
  linux-image-oracle              4.15.0.1025.18
  linux-image-powerpc-e500mc      4.4.0.164.172
  linux-image-powerpc-smp         4.4.0.164.172
  linux-image-powerpc64-emb       4.4.0.164.172
  linux-image-powerpc64-smp       4.4.0.164.172
  linux-image-raspi2              4.4.0.1122.122
  linux-image-snapdragon          4.4.0.1126.118
  linux-image-virtual             4.4.0.164.172
  linux-image-virtual-hwe-16.04   4.15.0.64.84

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.