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Ubuntu 14.04 LTS: USN-3619-2 Critical DoS Threats in Kernel

ubuntu
Calendar Grey April 5, 2018
Scroller Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
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-3619-1 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.

Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation

in the Linux kernel improperly performed sign extension in some situations.

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

or possibly execute arbitrary code. (CVE-2017-16995)

It was discovered that a race condition leading to a use-after-free

vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A

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

or possibly execute arbitrary code. (...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory doS ubuntu system crash linux kernel linux-lts-xenial linux-aws

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-4.4.0-1016-aws      4.4.0-1016.16
  linux-image-4.4.0-119-generic   4.4.0-119.143~14.04.1
  linux-image-4.4.0-119-generic-lpae  4.4.0-119.143~14.04.1
  linux-image-4.4.0-119-lowlatency  4.4.0-119.143~14.04.1
  linux-image-4.4.0-119-powerpc-e500mc  4.4.0-119.143~14.04.1
  linux-image-4.4.0-119-powerpc-smp  4.4.0-119.143~14.04.1
  linux-image-4.4.0-119-powerpc64-emb  4.4.0-119.143~14.04.1
  linux-image-4.4.0-119-powerpc64-smp  4.4.0-119.143~14.04.1
  linux-image-aws                 4.4.0.1016.16
  linux-image-generic-lpae-lts-xenial  4.4.0.119.100
  linux-image-generic-lts-xenial  4.4.0.119.100
  linux-image-lowlatency-lts-xenial  4.4.0.119.100
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.119.100
  linux-image-powerpc-smp-lts-xenial  4.4.0.119.100
  linux-image-powerpc64-emb-lts-xenial  4.4.0.119.100
  linux-image-powerpc64-smp-lts-xenial  4.4.0.119.100

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-3619-2

https://ubuntu.com/security/notices/USN-3619-1

CVE-2017-0861, CVE-2017-1000407, CVE-2017-11472, CVE-2017-15129,

CVE-2017-16528, CVE-2017-16532, CVE-2017-16536, CVE-2017-16537,

CVE-2017-16645, CVE-2017-16646, CVE-2017-16649, CVE-2017-16650,

CVE-2017-16911, CVE-2017-16912, CVE-2017-16913, CVE-2017-16914,

CVE-2017-16994, CVE-2017-16995, CVE-2017-17448, CVE-2017-17449,

CVE-2017-17450, CVE-2017-17558, CVE-2017-17741, CVE-2017-17805,

CVE-2017-17806, CVE-2017-17807, CVE-2017-17862, CVE-2017-18075,

CVE-2017-18203, CVE-2017-18204, CVE-2017-18208, CVE-2017-7518,

CVE-2018-1000026, CVE-2018-5332, CVE-2018-5333, CVE-2018-5344,

CVE-2018-6927, CVE-2018-7492, CVE-2018-8043

Severity
critical
Lowest
Low
Medium
High
Critical

April 05, 2018

Topics%20covered

Topics Covered

security advisory doS ubuntu system crash linux kernel linux-lts-xenial linux-aws

Package Information

https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1016.16
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-119.143~14.04.1

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