=========================================================================Ubuntu Security Notice USN-5357-2
March 31, 2022

linux-aws-hwe, linux-gcp-4.15, linux-oracle vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

The system could be made to crash or run programs as an administrator.

Software Description:
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems

Details:

It was discovered that the IPsec implementation in the Linux
kernel did not properly allocate enough memory when performing ESP
transformations, leading to a heap-based buffer overflow. A local
attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1091-oracle  4.15.0-1091.100
  linux-image-4.15.0-1120-gcp     4.15.0-1120.134
  linux-image-gcp-lts-18.04       4.15.0.1120.139
  linux-image-oracle-lts-18.04    4.15.0.1091.101

Ubuntu 16.04 ESM:
  linux-image-4.15.0-1091-oracle  4.15.0-1091.100~16.04.1
  linux-image-4.15.0-1126-aws-hwe  4.15.0-1126.135~16.04.2
  linux-image-aws-hwe             4.15.0.1126.116
  linux-image-oracle              4.15.0.1091.79

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-5357-2
  https://ubuntu.com/security/notices/USN-5357-1
  CVE-2022-27666

Package Information:
  https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1120.134
  https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1091.100

Ubuntu 5357-2: Linux kernel vulnerability

March 31, 2022
The system could be made to crash or run programs as an administrator.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1091-oracle 4.15.0-1091.100 linux-image-4.15.0-1120-gcp 4.15.0-1120.134 linux-image-gcp-lts-18.04 4.15.0.1120.139 linux-image-oracle-lts-18.04 4.15.0.1091.101 Ubuntu 16.04 ESM: linux-image-4.15.0-1091-oracle 4.15.0-1091.100~16.04.1 linux-image-4.15.0-1126-aws-hwe 4.15.0-1126.135~16.04.2 linux-image-aws-hwe 4.15.0.1126.116 linux-image-oracle 4.15.0.1091.79 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-5357-2

https://ubuntu.com/security/notices/USN-5357-1

CVE-2022-27666

Severity
March 31, 2022

Package Information

https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1120.134 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1091.100

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