Ubuntu 18.04 LTS: USN-4578-1 Critical: Denial Of Service Issues

ubuntu

October 13, 2020

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-4.15: Linux kernel for Microsoft Azure Cloud systems

- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems

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

- linux-kvm: Linux kernel for cloud environments

- linux-oem: Linux kernel for OEM systems

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi2: Linux kernel for Raspberry Pi (V8) systems

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

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

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

Details:

Hador Manor discovered that the DCCP protocol implementation in the Linux

kernel impro...

Read the Full Advisory

Topics Covered

security advisory denial of service critical arbitrary code execution ubuntu linux update linux kernel

Update Instructions

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

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1057-oracle  4.15.0-1057.62
  linux-image-4.15.0-1072-gke     4.15.0-1072.76
  linux-image-4.15.0-1073-raspi2  4.15.0-1073.78
  linux-image-4.15.0-1077-kvm     4.15.0-1077.79
  linux-image-4.15.0-1086-aws     4.15.0-1086.91
  linux-image-4.15.0-1086-gcp     4.15.0-1086.98
  linux-image-4.15.0-1089-snapdragon  4.15.0-1089.98
  linux-image-4.15.0-1099-azure   4.15.0-1099.110
  linux-image-4.15.0-1099-oem     4.15.0-1099.109
  linux-image-4.15.0-121-generic  4.15.0-121.123
  linux-image-4.15.0-121-generic-lpae  4.15.0-121.123
  linux-image-4.15.0-121-lowlatency  4.15.0-121.123
  linux-image-aws-lts-18.04       4.15.0.1086.88
  linux-image-azure-lts-18.04     4.15.0.1099.72
  linux-image-gcp-lts-18.04       4.15.0.1086.104
  linux-image-generic             4.15.0.121.108
  linux-image-generic-lpae        4.15.0.121.108
  linux-image-gke                 4.15.0.1072.76
  linux-image-gke-4.15            4.15.0.1072.76
  linux-image-kvm                 4.15.0.1077.73
  linux-image-lowlatency          4.15.0.121.108
  linux-image-oem                 4.15.0.1099.103
  linux-image-oracle-lts-18.04    4.15.0.1057.67
  linux-image-powerpc-e500mc      4.15.0.121.108
  linux-image-powerpc-smp         4.15.0.121.108
  linux-image-powerpc64-emb       4.15.0.121.108
  linux-image-powerpc64-smp       4.15.0.121.108
  linux-image-raspi2              4.15.0.1073.70
  linux-image-snapdragon          4.15.0.1089.92
  linux-image-virtual             4.15.0.121.108

Ubuntu 16.04 LTS:
  linux-image-4.15.0-1056-oracle  4.15.0-1056.61~16.04.1
  linux-image-4.15.0-1085-aws     4.15.0-1085.90~16.04.1
  linux-image-4.15.0-1086-gcp     4.15.0-1086.98~16.04.1
  linux-image-4.15.0-1098-azure   4.15.0-1098.109~16.04.1
  linux-image-4.15.0-120-generic  4.15.0-120.122~16.04.1
  linux-image-4.15.0-120-generic-lpae  4.15.0-120.122~16.04.1
  linux-image-4.15.0-120-lowlatency  4.15.0-120.122~16.04.1
  linux-image-aws-hwe             4.15.0.1085.81
  linux-image-azure               4.15.0.1098.92
  linux-image-gcp                 4.15.0.1086.87
  linux-image-generic-hwe-16.04   4.15.0.120.121
  linux-image-generic-lpae-hwe-16.04  4.15.0.120.121
  linux-image-gke                 4.15.0.1086.87
  linux-image-lowlatency-hwe-16.04  4.15.0.120.121
  linux-image-oem                 4.15.0.120.121
  linux-image-oracle              4.15.0.1056.46
  linux-image-virtual-hwe-16.04   4.15.0.120.121

Ubuntu 14.04 ESM:
  linux-image-4.15.0-1098-azure   4.15.0-1098.109~14.04.1
  linux-image-azure               4.15.0.1098.74

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.