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Ubuntu 12.04 ESM USN-3698-2 Critical: Multiple Kernel Security Issues

ubuntu
Calendar Grey July 2, 2018
Dist Ubuntu Esm H88
Multiple vulnerabilities in Linux kernel fixed for Ubuntu 12.04 ESM with essential update instructions provided.
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-3698-1 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.

It was discovered that the nested KVM implementation in the Linux kernel in

some situations did not properly prevent second level guests from reading

and writing the hardware CR8 register. A local attacker in a guest could

use this to cause a denial of service (system crash). (CVE-2017-12154)

Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array

implementation in the Linux kernel sometimes did not properly handle adding

a new entry. A local attacker could use this to cause a denial of service

(system crash). (CVE-2017-12193)

It was discovered that a race condition existed in the A...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service update instructions kernel issues linux-lts-trusty

Update Instructions

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

Ubuntu 12.04 ESM:
  linux-image-3.13.0-153-generic  3.13.0-153.203~precise1
  linux-image-3.13.0-153-generic-lpae  3.13.0-153.203~precise1
  linux-image-generic-lpae-lts-trusty  3.13.0.153.143
  linux-image-generic-lts-trusty  3.13.0.153.143

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-3698-2

https://ubuntu.com/security/notices/USN-3698-1

CVE-2017-12154, CVE-2017-12193, CVE-2017-15265, CVE-2018-1130,

CVE-2018-3665, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927,

CVE-2018-7755, CVE-2018-7757

Severity
critical
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Critical

July 02, 2018

Topics%20covered

Topics Covered

security advisory denial of service update instructions kernel issues linux-lts-trusty

Package Information

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