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=========================================================================Ubuntu Security Notice USN-2857-2
January 05, 2016

linux-lts-vivid vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS

Summary:

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

Software Description:
- linux-lts-vivid: Linux hardware enablement kernel from Vivid

Details:

Nathan Williams discovered that overlayfs in the Linux kernel incorrectly
handled setattr operations. A local unprivileged attacker could use this to
create files with administrative permission attributes and execute
arbitrary code with elevated privileges.

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-3.19.0-43-generic   3.19.0-43.49~14.04.1
  linux-image-3.19.0-43-generic-lpae  3.19.0-43.49~14.04.1
  linux-image-3.19.0-43-lowlatency  3.19.0-43.49~14.04.1
  linux-image-3.19.0-43-powerpc-e500mc  3.19.0-43.49~14.04.1
  linux-image-3.19.0-43-powerpc-smp  3.19.0-43.49~14.04.1
  linux-image-3.19.0-43-powerpc64-emb  3.19.0-43.49~14.04.1
  linux-image-3.19.0-43-powerpc64-smp  3.19.0-43.49~14.04.1

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-2857-2
  https://ubuntu.com/security/notices/USN-2857-1
  CVE-2015-8660

Package Information:
  https://launchpad.net/ubuntu/+source/linux-lts-vivid/3.19.0-43.49~14.04.1

Ubuntu 2857-2: Linux kernel (Vivid HWE) vulnerability

January 5, 2016
The system could be made to run programs as an administrator.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-3.19.0-43-generic 3.19.0-43.49~14.04.1 linux-image-3.19.0-43-generic-lpae 3.19.0-43.49~14.04.1 linux-image-3.19.0-43-lowlatency 3.19.0-43.49~14.04.1 linux-image-3.19.0-43-powerpc-e500mc 3.19.0-43.49~14.04.1 linux-image-3.19.0-43-powerpc-smp 3.19.0-43.49~14.04.1 linux-image-3.19.0-43-powerpc64-emb 3.19.0-43.49~14.04.1 linux-image-3.19.0-43-powerpc64-smp 3.19.0-43.49~14.04.1 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-2857-2

https://ubuntu.com/security/notices/USN-2857-1

CVE-2015-8660

Severity
January 05, 2016

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-vivid/3.19.0-43.49~14.04.1

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