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Ubuntu 18.04 LTS USN-3921-1 Critical: Linux Kernel HWE Memory Corruption

ubuntu
Calendar Grey June 7, 2017
Dist Ubuntu Esm H88
Debian Security Advisory DSA-4871-1 discusses a critical vulnerability within the Linux kernel affecting Debian 10.0.
The system could be made to run programs as an administrator.

Summary

The system could be made to run programs as an administrator.

Software Description:

- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-3313-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.10.

This update provides the corresponding updates for the Linux Hardware

Enablement (HWE) kernel from Ubuntu 16.10 for Ubuntu 16.04 LTS.

It was discovered that a buffer overflow existed in the trace subsystem in

the Linux kernel. A privileged local attacker could use this to execute

arbitrary code.

Topics%20covered

Topics Covered

security advisory buffer overflow update instructions ubuntu linux kernel

Update Instructions

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

Ubuntu 16.04 LTS:
  linux-image-4.8.0-54-generic    4.8.0-54.57~16.04.1
  linux-image-4.8.0-54-generic-lpae  4.8.0-54.57~16.04.1
  linux-image-4.8.0-54-lowlatency  4.8.0-54.57~16.04.1
  linux-image-generic-hwe-16.04   4.8.0.54.25
  linux-image-generic-lpae-hwe-16.04  4.8.0.54.25
  linux-image-lowlatency-hwe-16.04  4.8.0.54.25

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-3313-2

https://ubuntu.com/security/notices/USN-3313-1

CVE-2017-0605

Severity
critical
Lowest
Low
Medium
High
Critical

June 07, 2017

Topics%20covered

Topics Covered

security advisory buffer overflow update instructions ubuntu linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-hwe/4.8.0-54.57~16.04.1

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