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Ubuntu 12.04 ESM USN-3510-2 Moderate Kernel DoS and Code Threats

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Calendar Grey December 8, 2017
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A series of vulnerabilities have been resolved within the Linux kernel for Ubuntu 12.04 ESM, targeting potential threats related to service interruption and arbitrary code execution hazards.
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-3510-1 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.

Mohamed Ghannam discovered that a use-after-free vulnerability existed in

the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could

use this to cause a denial of service (system crash) or possibly execute

arbitrary code. (CVE-2017-16939)

It was discovered that the Linux kernel did not properly handle copy-on-

write of transparent huge pages. A local attacker could use this to cause a

denial of service (application crashes) or possibly gain administrative

privileges. (CVE-2017-1000405)

Topics%20covered

Topics Covered

security advisory denial of service code execution kernel ubuntu linux

Update Instructions

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

Ubuntu 12.04 ESM:
  linux-image-3.13.0-137-generic  3.13.0-137.186~precise1
  linux-image-3.13.0-137-generic-lpae  3.13.0-137.186~precise1
  linux-image-generic-lpae-lts-trusty  3.13.0.137.127
  linux-image-generic-lts-trusty  3.13.0.137.127

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-3510-1

CVE-2017-1000405, CVE-2017-16939

December 08, 2017

Topics%20covered

Topics Covered

security advisory denial of service code execution kernel ubuntu linux

Package Information

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