Executive Summary

Summary
Title Linux kernel vulnerabilities
Informations
NameUSN-4005-1First vendor Publication2019-06-04
VendorUbuntuLast vendor Modification2019-06-04
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score9.3Attack RangeNetwork
Cvss Impact Score10Attack ComplexityMedium
Cvss Expoit Score8.6AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 19.04

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-gcp: Linux kernel for Google Cloud Platform (GCP) 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 a null pointer dereference vulnerability existed in the LSI Logic MegaRAID driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-11810)

It was discovered that a race condition leading to a use-after-free existed in the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel. The RDS protocol is blacklisted by default in Ubuntu. If enabled, a local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-11815)

Update instructions:

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

Ubuntu 19.04:
linux-image-5.0.0-1007-aws 5.0.0-1007.7
linux-image-5.0.0-1007-gcp 5.0.0-1007.7
linux-image-5.0.0-1007-kvm 5.0.0-1007.7
linux-image-5.0.0-1009-raspi2 5.0.0-1009.9
linux-image-5.0.0-1013-snapdragon 5.0.0-1013.13
linux-image-5.0.0-16-generic 5.0.0-16.17
linux-image-5.0.0-16-generic-lpae 5.0.0-16.17
linux-image-5.0.0-16-lowlatency 5.0.0-16.17
linux-image-aws 5.0.0.1007.7
linux-image-gcp 5.0.0.1007.7
linux-image-generic 5.0.0.16.17
linux-image-generic-lpae 5.0.0.16.17
linux-image-gke 5.0.0.1007.7
linux-image-kvm 5.0.0.1007.7
linux-image-lowlatency 5.0.0.16.17
linux-image-raspi2 5.0.0.1009.6
linux-image-snapdragon 5.0.0.1013.6

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/4005-1
CVE-2019-11810, CVE-2019-11815

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.0.0-16.17
https://launchpad.net/ubuntu/+source/linux-aws/5.0.0-1007.7
https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1007.7
https://launchpad.net/ubuntu/+source/linux-kvm/5.0.0-1007.7
https://launchpad.net/ubuntu/+source/linux-raspi2/5.0.0-1009.9
https://launchpad.net/ubuntu/+source/linux-snapdragon/5.0.0-1013.13

Original Source

Url : http://www.ubuntu.com/usn/USN-4005-1

CWE : Common Weakness Enumeration

%idName
50 %CWE-476NULL Pointer Dereference
50 %CWE-362Race Condition

CPE : Common Platform Enumeration

TypeDescriptionCount
Os2759

Alert History

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0
DateInformations
2019-06-05 05:18:56
  • First insertion