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Ubuntu 12.04 ESM USN-3763-1 Critical: Kernel DoS Due To Network Issue

ubuntu
Calendar Grey September 11, 2018
Dist Ubuntu Esm H88
Explore the details of the Ubuntu 3763-1 security notice, highlighting essential fixes for a major kernel flaw. Get instructions for applying updates to protect your system
The system could be made to crash if it received specially craftednetwork traffic.

Summary

The system could be made to crash if it received specially crafted

network traffic.

Software Description:

- linux: Linux kernel

Details:

Juha-Matti Tilli discovered that the TCP implementation in the Linux kernel

performed algorithmically expensive operations in some situations when

handling incoming packets. A remote attacker could use this to cause a

denial of service.

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu network issue

Update Instructions

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

Ubuntu 12.04 ESM:
  linux-image-3.2.0-135-generic   3.2.0-135.181
  linux-image-3.2.0-135-generic-pae  3.2.0-135.181
  linux-image-3.2.0-135-highbank  3.2.0-135.181
  linux-image-3.2.0-135-omap      3.2.0-135.181
  linux-image-3.2.0-135-powerpc-smp  3.2.0-135.181
  linux-image-3.2.0-135-powerpc64-smp  3.2.0-135.181
  linux-image-3.2.0-135-virtual   3.2.0-135.181
  linux-image-generic             3.2.0.135.150
  linux-image-generic-pae         3.2.0.135.150
  linux-image-highbank            3.2.0.135.150
  linux-image-omap                3.2.0.135.150
  linux-image-powerpc-smp         3.2.0.135.150
  linux-image-powerpc64-smp       3.2.0.135.150
  linux-image-virtual             3.2.0.135.150

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-3763-1

CVE-2018-5390

Severity
critical
Lowest
Low
Medium
High
Critical

September 11, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu network issue

Package Information

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