Executive Summary

Summary
Title Linux kernel vulnerabilities
Informations
Name USN-4302-1 First vendor Publication 2020-03-17
Vendor Ubuntu Last vendor Modification 2020-03-17
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 4.9 Attack Range Local
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 18.04 LTS - Ubuntu 16.04 LTS

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-gke-4.15: Linux kernel for Google Container Engine (GKE) systems - linux-kvm: Linux kernel for cloud environments - linux-raspi2: Linux kernel for Raspberry Pi 2 - linux-snapdragon: Linux kernel for Snapdragon processors - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested (level 2) guest access the resources of a parent (level 1) guest in certain situations. An attacker could use this to expose sensitive information. (CVE-2020-2732)

Gregory Herrero discovered that the fix for CVE-2019-14615 to address the Linux kernel not properly clearing data structures on context switches for certain Intel graphics processors was incomplete. A local attacker could use this to expose sensitive information. (CVE-2020-8832)

It was discovered that the IPMI message handler implementation in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19046)

It was discovered that the Intel WiMAX 2400 driver in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19051)

It was discovered that the Marvell Wi-Fi device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to possibly cause a denial of service (kernel memory exhaustion). (CVE-2019-19056)

It was discovered that the Intel(R) Wi-Fi device driver in the Linux kernel device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19058)

It was discovered that the Brocade BFA Fibre Channel device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19066)

It was discovered that the Realtek RTL8xxx USB Wi-Fi device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19068)

It was discovered that ZR364XX Camera USB device driver for the Linux kernel did not properly initialize memory. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2019-15217)

Update instructions:

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

Ubuntu 18.04 LTS:
linux-image-4.15.0-1055-gke 4.15.0-1055.58
linux-image-4.15.0-1056-kvm 4.15.0-1056.57
linux-image-4.15.0-1057-raspi2 4.15.0-1057.61
linux-image-4.15.0-1063-aws 4.15.0-1063.67
linux-image-4.15.0-1074-snapdragon 4.15.0-1074.81
linux-image-4.15.0-91-generic 4.15.0-91.92
linux-image-4.15.0-91-generic-lpae 4.15.0-91.92
linux-image-4.15.0-91-lowlatency 4.15.0-91.92
linux-image-aws 4.15.0.1063.64
linux-image-aws-lts-18.04 4.15.0.1063.64
linux-image-generic 4.15.0.91.83
linux-image-generic-lpae 4.15.0.91.83
linux-image-gke 4.15.0.1055.59
linux-image-gke-4.15 4.15.0.1055.59
linux-image-kvm 4.15.0.1056.56
linux-image-lowlatency 4.15.0.91.83
linux-image-powerpc-e500mc 4.15.0.91.83
linux-image-powerpc-smp 4.15.0.91.83
linux-image-powerpc64-emb 4.15.0.91.83
linux-image-powerpc64-smp 4.15.0.91.83
linux-image-raspi2 4.15.0.1057.55
linux-image-snapdragon 4.15.0.1074.77
linux-image-virtual 4.15.0.91.83

Ubuntu 16.04 LTS:
linux-image-4.15.0-1058-gcp 4.15.0-1058.62
linux-image-4.15.0-1063-aws 4.15.0-1063.67~16.04.1
linux-image-4.15.0-91-generic 4.15.0-91.92~16.04.1
linux-image-4.15.0-91-generic-lpae 4.15.0-91.92~16.04.1
linux-image-4.15.0-91-lowlatency 4.15.0-91.92~16.04.1
linux-image-aws-hwe 4.15.0.1063.63
linux-image-gcp 4.15.0.1058.72
linux-image-generic-hwe-16.04 4.15.0.91.101
linux-image-generic-lpae-hwe-16.04 4.15.0.91.101
linux-image-gke 4.15.0.1058.72
linux-image-lowlatency-hwe-16.04 4.15.0.91.101
linux-image-oem 4.15.0.91.101
linux-image-virtual-hwe-16.04 4.15.0.91.101

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/4302-1
CVE-2019-15217, CVE-2019-19046, CVE-2019-19051, CVE-2019-19056,
CVE-2019-19058, CVE-2019-19066, CVE-2019-19068, CVE-2020-2732,
CVE-2020-8832

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-91.92
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1063.67
https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1055.58
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1056.57
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1057.61
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1074.81
https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1063.67~16.04.1
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1058.62
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-91.92~16.04.1

Original Source

Url : http://www.ubuntu.com/usn/USN-4302-1

CWE : Common Weakness Enumeration

% Id Name
75 % CWE-401 Failure to Release Memory Before Removing Last Reference ('Memory Leak')
12 % CWE-476 NULL Pointer Dereference
12 % CWE-200 Information Exposure

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Hardware 1
Os 6
Os 1
Os 2
Os 3354
Os 2
Os 2

Alert History

If you want to see full details history, please login or register.
0
Date Informations
2020-03-17 05:19:02
  • First insertion