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Ubuntu 14.04 LTS: USN-3797-2 Critical Denial Of Service Threat

ubuntu
Calendar Grey October 23, 2018
Dist Ubuntu Esm H88
Important patches released for Ubuntu 14.04 addressing various Linux kernel vulnerabilities, notably denial of service flaws.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-3797-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04

LTS. This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu

14.04 LTS.

Noam Rathaus discovered that a use-after-free vulnerability existed in the

Infiniband implementation in the Linux kernel. An attacker could use this

to cause a denial of service (system crash). (CVE-2018-14734)

It was discovered that an integer overflow existed in the CD-ROM driver of

the Linux kernel. A local attacker could use this to expose sensitive

information (kernel memory). (CVE-2018-16658)

It was discovered that a integer overflow existed in the HID Bluetooth

implementation in the Linux kernel that could lead to a buffer overwrite.

An ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue kernel update Ubuntu system crash Linux kernel

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-4.4.0-1032-aws      4.4.0-1032.35
  linux-image-4.4.0-138-generic   4.4.0-138.164~14.04.1
  linux-image-4.4.0-138-generic-lpae  4.4.0-138.164~14.04.1
  linux-image-4.4.0-138-lowlatency  4.4.0-138.164~14.04.1
  linux-image-4.4.0-138-powerpc-e500mc  4.4.0-138.164~14.04.1
  linux-image-4.4.0-138-powerpc-smp  4.4.0-138.164~14.04.1
  linux-image-4.4.0-138-powerpc64-emb  4.4.0-138.164~14.04.1
  linux-image-4.4.0-138-powerpc64-smp  4.4.0-138.164~14.04.1
  linux-image-aws                 4.4.0.1032.32
  linux-image-generic-lpae-lts-xenial  4.4.0.138.118
  linux-image-generic-lts-xenial  4.4.0.138.118
  linux-image-lowlatency-lts-xenial  4.4.0.138.118
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.138.118
  linux-image-powerpc-smp-lts-xenial  4.4.0.138.118
  linux-image-powerpc64-emb-lts-xenial  4.4.0.138.118
  linux-image-powerpc64-smp-lts-xenial  4.4.0.138.118

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-3797-2

https://ubuntu.com/security/notices/USN-3797-1

CVE-2018-10938, CVE-2018-14734, CVE-2018-16658, CVE-2018-9363

Severity
critical
Lowest
Low
Medium
High
Critical

October 23, 2018

Topics%20covered

Topics Covered

security advisory denial of service security issue kernel update Ubuntu system crash Linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1032.35
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-138.164~14.04.1

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