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Ubuntu 14.04 LTS: USN-3469-2 Moderate: Kernel Security Issues Resolution

ubuntu
Calendar Grey October 31, 2017
Scroller Ubuntu
To mitigate risks of code execution or privilege escalation in Ubuntu 14.04 LTS noted in USN-3469-2, users must apply the necessary updates and ensure system integrity.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

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

Details:

USN-3469-1 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.

Anthony Perard discovered that the Xen virtual block driver did not

properly initialize some data structures before passing them to user space.

A local attacker in a guest VM could use this to expose sensitive

information from the host OS or other guest VMs. (CVE-2017-10911)

Bo Zhang discovered that the netlink wireless configuration interface in

the Linux kernel did not properly validate attributes when handling certain

requests. A local attacker with the CAP_NET_ADMIN could use this to cause a

denial of service (system crash). (CVE-2017-12153)

It was discovered that the nested KVM i...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel update security fix sensitive information exposure linux-lts-xenial

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-4.4.0-98-generic    4.4.0-98.121~14.04.1
  linux-image-4.4.0-98-generic-lpae  4.4.0-98.121~14.04.1
  linux-image-4.4.0-98-lowlatency  4.4.0-98.121~14.04.1
  linux-image-4.4.0-98-powerpc-e500mc  4.4.0-98.121~14.04.1
  linux-image-4.4.0-98-powerpc-smp  4.4.0-98.121~14.04.1
  linux-image-4.4.0-98-powerpc64-emb  4.4.0-98.121~14.04.1
  linux-image-4.4.0-98-powerpc64-smp  4.4.0-98.121~14.04.1
  linux-image-generic-lpae-lts-xenial  4.4.0.98.82
  linux-image-generic-lts-xenial  4.4.0.98.82
  linux-image-lowlatency-lts-xenial  4.4.0.98.82
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.98.82
  linux-image-powerpc-smp-lts-xenial  4.4.0.98.82
  linux-image-powerpc64-emb-lts-xenial  4.4.0.98.82
  linux-image-powerpc64-smp-lts-xenial  4.4.0.98.82

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-3469-2

https://ubuntu.com/security/notices/USN-3469-1

CVE-2017-10911, CVE-2017-12153, CVE-2017-12154, CVE-2017-12192,

CVE-2017-14051, CVE-2017-14156, CVE-2017-14340, CVE-2017-14489,

CVE-2017-14991, CVE-2017-15537, CVE-2017-9984, CVE-2017-9985

October 31, 2017

Topics%20covered

Topics Covered

security advisory denial of service kernel update security fix sensitive information exposure linux-lts-xenial

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-98.121~14.04.1

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