Executive Summary

Summary
Title Linux kernel vulnerabilities
Informations
Name USN-3933-1 First vendor Publication 2019-04-02
Vendor Ubuntu Last vendor Modification 2019-04-02
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:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description: - linux: Linux kernel

Details:

It was discovered that an information leak vulnerability existed in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could possibly expose sensitive information (kernel memory). (CVE-2017-1000410)

It was discovered that the USB serial device driver in the Linux kernel did not properly validate baud rate settings when debugging is enabled. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18360)

Mathias Payer and Hui Peng discovered a use-after-free vulnerability in the Advanced Linux Sound Architecture (ALSA) subsystem. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2018-19824)

Shlomi Oberman, Yuli Shapiro, and Ran Menscher discovered an information leak in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could use this to expose sensitive information (kernel memory). (CVE-2019-3459, CVE-2019-3460)

Jann Horn discovered that the KVM implementation in the Linux kernel contained a use-after-free vulnerability. An attacker in a guest VM with access to /dev/kvm could use this to cause a denial of service (guest VM crash). (CVE-2019-6974)

Felix Wilhelm discovered that an information leak vulnerability existed in the KVM subsystem of the Linux kernel, when nested virtualization is used. A local attacker could use this to expose sensitive information (host system memory to a guest VM). (CVE-2019-7222)

Jann Horn discovered that the mmap implementation in the Linux kernel did not properly check for the mmap minimum address in some situations. A local attacker could use this to assist exploiting a kernel NULL pointer dereference vulnerability. (CVE-2019-9213)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-168-generic 3.13.0-168.218
linux-image-3.13.0-168-generic-lpae 3.13.0-168.218
linux-image-3.13.0-168-lowlatency 3.13.0-168.218
linux-image-3.13.0-168-powerpc-e500 3.13.0-168.218
linux-image-3.13.0-168-powerpc-e500mc 3.13.0-168.218
linux-image-3.13.0-168-powerpc-smp 3.13.0-168.218
linux-image-3.13.0-168-powerpc64-emb 3.13.0-168.218
linux-image-3.13.0-168-powerpc64-smp 3.13.0-168.218
linux-image-generic 3.13.0.168.179
linux-image-generic-lpae 3.13.0.168.179
linux-image-lowlatency 3.13.0.168.179
linux-image-powerpc-e500 3.13.0.168.179
linux-image-powerpc-e500mc 3.13.0.168.179
linux-image-powerpc-smp 3.13.0.168.179
linux-image-powerpc64-emb 3.13.0.168.179
linux-image-powerpc64-smp 3.13.0.168.179
linux-image-virtual 3.13.0.168.179

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/usn/usn-3933-1
CVE-2017-1000410, CVE-2017-18360, CVE-2018-19824, CVE-2019-3459,
CVE-2019-3460, CVE-2019-6974, CVE-2019-7222, CVE-2019-9213

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-168.218

Original Source

Url : http://www.ubuntu.com/usn/USN-3933-1

CWE : Common Weakness Enumeration

% Id Name
43 % CWE-200 Information Exposure
14 % CWE-476 NULL Pointer Dereference
14 % CWE-416 Use After Free
14 % CWE-369 Divide By Zero
14 % CWE-362 Race Condition

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 91
Application 82
Application 84
Application 77
Application 102
Application 80
Application 73
Application 96
Application 93
Application 97
Application 82
Application 90
Application 1
Application 1
Application 1
Application 1
Hardware 7
Hardware 6
Os 5
Os 2
Os 2
Os