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Ubuntu 14.04 LTS: USN-3699-1 Important Security Vulnerabilities Detected

ubuntu
Calendar Grey July 2, 2018
Dist Ubuntu Esm H88
A range of security updates for the Linux kernel has been released for Ubuntu 14.04 LTS, tackling concerns related to denial of service and potential information leaks.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

Details:

It was discovered that the nested KVM implementation in the Linux kernel in

some situations did not properly prevent second level guests from reading

and writing the hardware CR8 register. A local attacker in a guest could

use this to cause a denial of service (system crash). (CVE-2017-12154)

Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array

implementation in the Linux kernel sometimes did not properly handle adding

a new entry. A local attacker could use this to cause a denial of service

(system crash). (CVE-2017-12193)

It was discovered that a race condition existed in the ALSA subsystem of

the Linux kernel when creating and deleting a port via ioctl(). A local

attacker could use this to cause a denial of service (system crash) or

possibly execute arbitrary code. (CVE-2017-15265)

It was discovered that a null pointer dereference vulnerabilit...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu system update information disclosure kernel issues

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-153-generic  3.13.0-153.203
  linux-image-3.13.0-153-generic-lpae  3.13.0-153.203
  linux-image-3.13.0-153-lowlatency  3.13.0-153.203
  linux-image-3.13.0-153-powerpc-e500  3.13.0-153.203
  linux-image-3.13.0-153-powerpc-e500mc  3.13.0-153.203
  linux-image-3.13.0-153-powerpc-smp  3.13.0-153.203
  linux-image-3.13.0-153-powerpc64-emb  3.13.0-153.203
  linux-image-3.13.0-153-powerpc64-smp  3.13.0-153.203
  linux-image-generic             3.13.0.153.163
  linux-image-generic-lpae        3.13.0.153.163
  linux-image-lowlatency          3.13.0.153.163
  linux-image-powerpc-e500        3.13.0.153.163
  linux-image-powerpc-e500mc      3.13.0.153.163
  linux-image-powerpc-smp         3.13.0.153.163
  linux-image-powerpc64-emb       3.13.0.153.163
  linux-image-powerpc64-smp       3.13.0.153.163

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-3698-1

CVE-2017-12154, CVE-2017-12193, CVE-2017-15265, CVE-2018-1130,

CVE-2018-3665, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927,

CVE-2018-7755, CVE-2018-7757

Severity
important
Lowest
Low
Medium
High
Critical

July 02, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu system update information disclosure kernel issues

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-153.203

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