Executive Summary

Summary
Title Linux kernel vulnerability
Informations
NameUSN-4161-1First vendor Publication2019-10-21
VendorUbuntuLast vendor Modification2019-10-21
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base ScoreN/AAttack RangeN/A
Cvss Impact ScoreN/AAttack ComplexityN/A
Cvss Expoit ScoreN/AAuthenticationN/A
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10

Summary:

The system could be made to crash under certain conditions.

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

Details:

It was discovered that the IPv6 routing implementation in the Linux kernel contained a reference counting error leading to a use-after-free vulnerability. 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 19.10:
linux-image-5.3.0-1004-aws 5.3.0-1004.4
linux-image-5.3.0-1004-azure 5.3.0-1004.4
linux-image-5.3.0-1004-kvm 5.3.0-1004.4
linux-image-5.3.0-1005-gcp 5.3.0-1005.5
linux-image-5.3.0-1008-raspi2 5.3.0-1008.9
linux-image-5.3.0-19-generic 5.3.0-19.20
linux-image-5.3.0-19-generic-lpae 5.3.0-19.20
linux-image-5.3.0-19-lowlatency 5.3.0-19.20
linux-image-5.3.0-19-snapdragon 5.3.0-19.20
linux-image-aws 5.3.0.1004.5
linux-image-azure 5.3.0.1004.21
linux-image-gcp 5.3.0.1005.5
linux-image-generic 5.3.0.19.22
linux-image-generic-lpae 5.3.0.19.22
linux-image-gke 5.3.0.1005.5
linux-image-kvm 5.3.0.1004.4
linux-image-lowlatency 5.3.0.19.22
linux-image-raspi2 5.3.0.1008.4
linux-image-snapdragon 5.3.0.19.22
linux-image-virtual 5.3.0.19.22

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://usn.ubuntu.com/4161-1
CVE-2019-18198

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.3.0-19.20
https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1004.4
https://launchpad.net/ubuntu/+source/linux-azure/5.3.0-1004.4
https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1005.5
https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1004.4
https://launchpad.net/ubuntu/+source/linux-raspi2/5.3.0-1008.9

Original Source

Url : http://www.ubuntu.com/usn/USN-4161-1

Alert History

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0
DateInformations
2019-10-22 00:19:24
  • First insertion