Executive Summary

Summary
Title Linux kernel vulnerabilities
Informations
Name USN-4286-1 First vendor Publication 2020-02-18
Vendor Ubuntu Last vendor Modification 2020-02-18
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 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-kvm: Linux kernel for cloud environments - linux-raspi2: Linux kernel for Raspberry Pi 2 - linux-snapdragon: Linux kernel for Snapdragon processors

Details:

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. (CVE-2019-14615)

It was discovered that a race condition existed in the Softmac USB Prism54 device driver in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2019-15220)

Julien Grall discovered that the Xen balloon memory driver in the Linux kernel did not properly restrict the amount of memory set aside for page mappings in some situations. An attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-17351)

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 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)

Gao Chuan discovered that the SAS Class driver in the Linux kernel contained a race condition that could lead to a NULL pointer dereference. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-19965)

It was discovered that the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel did not properly deallocate memory in certain error conditions. An attacker could possibly use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-20096)

Mitchell Frank discovered that the Wi-Fi implementation in the Linux kernel when used as an access point would send IAPP location updates for stations before client authentication had completed. A physically proximate attacker could use this to cause a denial of service. (CVE-2019-5108)

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)

It was discovered that the Line 6 POD USB device driver in the Linux kernel did not properly validate data size information from the device. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2019-15221)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.4.0-1066-kvm 4.4.0-1066.73
linux-image-4.4.0-1102-aws 4.4.0-1102.113
linux-image-4.4.0-1129-raspi2 4.4.0-1129.138
linux-image-4.4.0-1133-snapdragon 4.4.0-1133.141
linux-image-4.4.0-174-generic 4.4.0-174.204
linux-image-4.4.0-174-generic-lpae 4.4.0-174.204
linux-image-4.4.0-174-lowlatency 4.4.0-174.204
linux-image-4.4.0-174-powerpc-e500mc 4.4.0-174.204
linux-image-4.4.0-174-powerpc-smp 4.4.0-174.204
linux-image-4.4.0-174-powerpc64-emb 4.4.0-174.204
linux-image-4.4.0-174-powerpc64-smp 4.4.0-174.204
linux-image-aws 4.4.0.1102.106
linux-image-generic 4.4.0.174.182
linux-image-generic-lpae 4.4.0.174.182
linux-image-kvm 4.4.0.1066.66
linux-image-lowlatency 4.4.0.174.182
linux-image-powerpc-e500mc 4.4.0.174.182
linux-image-powerpc-smp 4.4.0.174.182
linux-image-powerpc64-emb 4.4.0.174.182
linux-image-powerpc64-smp 4.4.0.174.182
linux-image-raspi2 4.4.0.1129.129
linux-image-snapdragon 4.4.0.1133.125
linux-image-virtual 4.4.0.174.182

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/4286-1
CVE-2019-14615, CVE-2019-15217, CVE-2019-15220, CVE-2019-15221,
CVE-2019-17351, CVE-2019-19051, CVE-2019-19056, CVE-2019-19066,
CVE-2019-19068, CVE-2019-19965, CVE-2019-20096, CVE-2019-5108

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-174.204
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1102.113
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1066.73
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1129.138
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1133.141

Original Source

Url : http://www.ubuntu.com/usn/USN-4286-1

CWE : Common Weakness Enumeration

% Id Name
45 % CWE-401 Failure to Release Memory Before Removing Last Reference ('Memory Leak')
27 % CWE-476 NULL Pointer Dereference
9 % CWE-770 Allocation of Resources Without Limits or Throttling
9 % CWE-416 Use After Free
9 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 1
Application 1
Application 19
Application 1
Application 1
Application 1
Application 1
Application 1
Application 17
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 4
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Os 7
Os 2
Os 2
Os 3362
Os 2
Os 2
Os 154

Alert History

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Date Informations
2020-02-19 00:18:48
  • First insertion