=========================================================================Ubuntu Security Notice USN-2597-1
May 05, 2015

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

- Ubuntu 12.04 LTS

Summary:

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

Software Description:
- linux-lts-trusty: Linux hardware enablement kernel from Trusty

Details:

A race condition between chown() and execve() was discovered in the Linux
kernel. A local attacker could exploit this race by using chown on a
setuid-user-binary to gain administrative privileges.

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.13.0-52-generic   3.13.0-52.85~precise1
  linux-image-3.13.0-52-generic-lpae  3.13.0-52.85~precise1

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References:
  https://ubuntu.com/security/notices/USN-2597-1
  CVE-2015-3339

Package Information:
  https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-52.85~precise1


Ubuntu 2597-1: Linux kernel (Trusty HWE) vulnerability

May 5, 2015
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 12.04 LTS: linux-image-3.13.0-52-generic 3.13.0-52.85~precise1 linux-image-3.13.0-52-generic-lpae 3.13.0-52.85~precise1 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. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.

References

https://ubuntu.com/security/notices/USN-2597-1

CVE-2015-3339

Severity
May 05, 2015

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-52.85~precise1

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