Ubuntu 18.04 LTS: USN-6130-1 Moderate: Kernel Denials and Threats

ubuntu

June 1, 2023

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-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud 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:

Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in

the netfilter subsystem of the Linux kernel when processing batch requests,

leading to a use-after-free vulnerability. A local attacker could use this

to cause a ...

Read the Full Advisory

Topics Covered

security advisory denial of service software update arbitrary code execution vulnerability kernel ubuntu

Update Instructions

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

Ubuntu 18.04 LTS:
   linux-image-4.15.0-1120-oracle  4.15.0-1120.131
   linux-image-4.15.0-1141-kvm     4.15.0-1141.146
   linux-image-4.15.0-1151-gcp     4.15.0-1151.167
   linux-image-4.15.0-1151-snapdragon  4.15.0-1151.161
   linux-image-4.15.0-1157-aws     4.15.0-1157.170
   linux-image-4.15.0-1166-azure   4.15.0-1166.181
   linux-image-4.15.0-212-generic  4.15.0-212.223
   linux-image-4.15.0-212-generic-lpae  4.15.0-212.223
   linux-image-4.15.0-212-lowlatency  4.15.0-212.223
   linux-image-aws-lts-18.04       4.15.0.1157.155
   linux-image-azure-lts-18.04     4.15.0.1166.134
   linux-image-gcp-lts-18.04       4.15.0.1151.165
   linux-image-generic             4.15.0.212.195
   linux-image-generic-lpae        4.15.0.212.195
   linux-image-kvm                 4.15.0.1141.132
   linux-image-lowlatency          4.15.0.212.195
   linux-image-oracle-lts-18.04    4.15.0.1120.125
   linux-image-snapdragon          4.15.0.1151.150
   linux-image-virtual             4.15.0.212.195

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1120-oracle  4.15.0-1120.131~16.04.1
   linux-image-4.15.0-1151-gcp     4.15.0-1151.167~16.04.1
   linux-image-4.15.0-1157-aws     4.15.0-1157.170~16.04.1
   linux-image-4.15.0-1166-azure   4.15.0-1166.181~16.04.1
   linux-image-4.15.0-212-generic  4.15.0-212.223~16.04.1
   linux-image-4.15.0-212-lowlatency  4.15.0-212.223~16.04.1
   linux-image-aws-hwe             4.15.0.1157.140
   linux-image-azure               4.15.0.1166.150
   linux-image-gcp                 4.15.0.1151.141
   linux-image-generic-hwe-16.04   4.15.0.212.197
   linux-image-gke                 4.15.0.1151.141
   linux-image-lowlatency-hwe-16.04  4.15.0.212.197
   linux-image-oem                 4.15.0.212.197
   linux-image-oracle              4.15.0.1120.101
   linux-image-virtual-hwe-16.04   4.15.0.212.197

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1166-azure   4.15.0-1166.181~14.04.1
   linux-image-azure               4.15.0.1166.132

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.