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Ubuntu 12.04 ESM: USN-3822-2 Critical: DoS Kernel Issues

ubuntu
Calendar Grey November 14, 2018
Dist Ubuntu Esm H88
The Ubuntu USN-4823-1 notice points out various kernel security updates in Bionic HWE, emphasizing urgent threats.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM

Details:

USN-3822-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04

LTS. This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu

12.04 ESM.

Jim Mattson discovered that the KVM implementation in the Linux kernel

mismanages the #BP and #OF exceptions. A local attacker in a guest virtual

machine could use this to cause a denial of service (guest OS crash).

(CVE-2016-9588)

It was discovered that the generic SCSI driver in the Linux kernel did not

properly enforce permissions on kernel memory access. A local attacker

could use this to expose sensitive information or possibly elevate

privileges. (CVE-2017-13168)

Andrey Konovalov discovered that the CDC USB Ethernet driver did not

properly validate device descriptors. A physically proximate attac...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service update critical kernel linux trusty

Update Instructions

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

Ubuntu 12.04 ESM:
  linux-image-3.13.0-162-generic  3.13.0-162.212~precise1
  linux-image-3.13.0-162-generic-lpae  3.13.0-162.212~precise1
  linux-image-generic-lpae-lts-trusty  3.13.0.162.152
  linux-image-generic-lts-trusty  3.13.0.162.152

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-3822-2

https://ubuntu.com/security/notices/USN-3822-1

CVE-2016-9588, CVE-2017-13168, CVE-2017-16649, CVE-2018-16658,

CVE-2018-9363

Severity
critical
Lowest
Low
Medium
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Critical

November 14, 2018

Topics%20covered

Topics Covered

security advisory denial of service update critical kernel linux trusty

Package Information

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