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Ubuntu 14.04 LTS: USN-3445-1 Critical: Kernel Buffer Overflow and DoS

ubuntu
Calendar Grey October 11, 2017
Scroller Ubuntu
Numerous vulnerabilities in the kernel were tackled in Ubuntu 14.04 LTS, necessitating a swift update for all users.
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:

Eyal Itkin discovered that the IP over IEEE 1394 (FireWire) implementation

in the Linux kernel contained a buffer overflow when handling fragmented

packets. A remote attacker could use this to possibly execute arbitrary

code with administrative privileges. (CVE-2016-8633)

Andrey Konovalov discovered that a divide-by-zero error existed in the TCP

stack implementation in the Linux kernel. A local attacker could use this

to cause a denial of service (system crash). (CVE-2017-14106)

Topics%20covered

Topics Covered

security advisory buffer overflow critical DoS Ubuntu kernel Linux kernel

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-133-generic  3.13.0-133.182
  linux-image-3.13.0-133-generic-lpae  3.13.0-133.182
  linux-image-3.13.0-133-lowlatency  3.13.0-133.182
  linux-image-3.13.0-133-powerpc-e500  3.13.0-133.182
  linux-image-3.13.0-133-powerpc-e500mc  3.13.0-133.182
  linux-image-3.13.0-133-powerpc-smp  3.13.0-133.182
  linux-image-3.13.0-133-powerpc64-emb  3.13.0-133.182
  linux-image-3.13.0-133-powerpc64-smp  3.13.0-133.182
  linux-image-generic             3.13.0.133.142
  linux-image-generic-lpae        3.13.0.133.142
  linux-image-lowlatency          3.13.0.133.142
  linux-image-powerpc-e500        3.13.0.133.142
  linux-image-powerpc-e500mc      3.13.0.133.142
  linux-image-powerpc-smp         3.13.0.133.142
  linux-image-powerpc64-emb       3.13.0.133.142
  linux-image-powerpc64-smp       3.13.0.133.142

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-3445-1

CVE-2016-8633, CVE-2017-14106

Severity
critical
Lowest
Low
Medium
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Critical

October 10, 2017

Topics%20covered

Topics Covered

security advisory buffer overflow critical DoS Ubuntu kernel Linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-133.182

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