Executive Summary

Summary
Title Linux kernel (HWE) vulnerability
Informations
NameUSN-4253-2First vendor Publication2020-01-28
VendorUbuntuLast vendor Modification2020-01-28
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 18.04 LTS

Summary:

he Linux kernel could be made to expose sensitive information.

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

Details:

USN-4253-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 19.10 for Ubuntu 18.04 LTS.

It was discovered that the Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors. A local attacker could use this to expose sensitive information.

Update instructions:

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

Ubuntu 18.04 LTS:
linux-image-5.3.0-28-generic 5.3.0-28.30~18.04.1
linux-image-5.3.0-28-generic-lpae 5.3.0-28.30~18.04.1
linux-image-5.3.0-28-lowlatency 5.3.0-28.30~18.04.1
linux-image-generic-hwe-18.04 5.3.0.28.96
linux-image-generic-lpae-hwe-18.04 5.3.0.28.96
linux-image-lowlatency-hwe-18.04 5.3.0.28.96
linux-image-snapdragon-hwe-18.04 5.3.0.28.96
linux-image-virtual-hwe-18.04 5.3.0.28.96

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/4253-2
https://usn.ubuntu.com/4253-1
CVE-2019-14615

Package Information:
https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-28.30~18.04.1

Original Source

Url : http://www.ubuntu.com/usn/USN-4253-2

Alert History

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0
DateInformations
2020-01-29 05:19:26
  • First insertion