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Ubuntu 14.04 LTS USN-3406-1 Critical: Kernel Denial Of Service Issues

ubuntu
Calendar Grey August 28, 2017
Dist Ubuntu Esm H88
Various vulnerabilities addressed in the kernel of Ubuntu 14.04 LTS, enhancing overall system reliability and safeguarding user information.
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 an out of bounds read vulnerability existed in the

associative array implementation in the Linux kernel. A local attacker

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

sensitive information. (CVE-2016-7914)

It was discovered that a NULL pointer dereference existed in the Direct

Rendering Manager (DRM) driver for VMWare devices in the Linux kernel. A

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

(CVE-2017-7261)

It was discovered that the USB Cypress HID drivers for the Linux kernel did

not properly validate reported information from the device. An attacker

with physical access could use this to expose sensitive information (kernel

memory). (CVE-2017-7273)

A reference count bug was discovered in the Linux kernel ipx protocol

stack. A local attacker could exploit this flaw to cause a denial of

serv...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory information leak critical Ubuntu kernel issues Denial Of Service

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-129-generic  3.13.0-129.178
  linux-image-3.13.0-129-generic-lpae  3.13.0-129.178
  linux-image-3.13.0-129-lowlatency  3.13.0-129.178
  linux-image-3.13.0-129-powerpc-e500  3.13.0-129.178
  linux-image-3.13.0-129-powerpc-e500mc  3.13.0-129.178
  linux-image-3.13.0-129-powerpc-smp  3.13.0-129.178
  linux-image-3.13.0-129-powerpc64-emb  3.13.0-129.178
  linux-image-3.13.0-129-powerpc64-smp  3.13.0-129.178
  linux-image-generic             3.13.0.129.138
  linux-image-generic-lpae        3.13.0.129.138
  linux-image-lowlatency          3.13.0.129.138
  linux-image-powerpc-e500        3.13.0.129.138
  linux-image-powerpc-e500mc      3.13.0.129.138
  linux-image-powerpc-smp         3.13.0.129.138
  linux-image-powerpc64-emb       3.13.0.129.138
  linux-image-powerpc64-smp       3.13.0.129.138

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-3406-1

CVE-2016-7914, CVE-2017-7261, CVE-2017-7273, CVE-2017-7487,

CVE-2017-7495, CVE-2017-7616

Severity
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August 28, 2017

Topics%20covered

Topics Covered

security advisory information leak critical Ubuntu kernel issues Denial Of Service

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-129.178

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