Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 428
Alerts This Week
Warning Icon 1 428

Ubuntu 18.04 LTS USN-3752-3 Critical: Kernel Issues and Threats

ubuntu
Calendar Grey August 28, 2018
Dist Ubuntu Esm H88
A range of vulnerabilities identified within the Linux kernel on Ubuntu have been addressed to avert potential system failures and unauthorized privilege elevation.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-oem: Linux kernel for OEM processors- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

Details:

It was discovered that, when attempting to handle an out-of-memory

situation, a null pointer dereference could be triggered in the Linux

kernel in some circumstances. A local attacker could use this to cause a

denial of service (system crash). (CVE-2018-1000200)

Wen Xu discovered that the XFS filesystem implementation in the Linux

kernel did not properly validate meta-data information. An attacker could

use this to construct a malicious xfs image that, when mounted, could cause

a denial of service (system crash). (CVE-2018-10323)

Wen Xu discovered that the XFS filesystem implementation in the Linux

kernel did not properly validate xattr information. An attacker could use

this to construct a malicious xfs image that, when m...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical kernel fixes filesystem ubuntu

Update Instructions

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

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1017-oem     4.15.0-1017.20
  linux-image-4.15.0-1022-azure   4.15.0-1022.23
  linux-image-azure               4.15.0.1022.22
  linux-image-azure-edge          4.15.0.1022.22
  linux-image-oem                 4.15.0.1017.19

Ubuntu 16.04 LTS:
  linux-image-4.15.0-1018-gcp     4.15.0-1018.19~16.04.2
  linux-image-4.15.0-1022-azure   4.15.0-1022.22~16.04.1
  linux-image-azure               4.15.0.1022.28
  linux-image-gcp                 4.15.0.1018.32
  linux-image-gke                 4.15.0.1018.32

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://ubuntu.com/security/notices/USN-3752-3

https://ubuntu.com/security/notices/USN-3752-1

CVE-2018-1000200, CVE-2018-1000204, CVE-2018-10323, CVE-2018-10840,

CVE-2018-10881, CVE-2018-1093, CVE-2018-1108, CVE-2018-1120,

CVE-2018-11412, CVE-2018-11506, CVE-2018-12232, CVE-2018-12233,

CVE-2018-12904, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406,

CVE-2018-5814, CVE-2018-9415

Severity
critical
Lowest
Low
Medium
High
Critical

August 28, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical kernel fixes filesystem ubuntu

Package Information

https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1022.23
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1017.20
https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1022.22~16.04.1
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1018.19~16.04.2

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.