=========================================================================Ubuntu Security Notice USN-2588-1
April 30, 2015

linux vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

A stack overflow was discovered in the the microcode loader for the intel
x86 platform. A local attacker could exploit this flaw to cause a denial of
service (kernel crash) or to potentially execute code with kernel
privileges. (CVE-2015-2666)

It was discovered that the Linux kernel's IPv6 networking stack has a flaw
that allows using route advertisement (RA) messages to set the 'hop_limit'
to values that are too low. An unprivileged attacker on a local network
could exploit this flaw to cause a denial of service (IPv6 messages
dropped). (CVE-2015-2922)

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-51-generic   3.13.0-51.84
  linux-image-3.13.0-51-generic-lpae  3.13.0-51.84
  linux-image-3.13.0-51-lowlatency  3.13.0-51.84
  linux-image-3.13.0-51-powerpc-e500  3.13.0-51.84
  linux-image-3.13.0-51-powerpc-e500mc  3.13.0-51.84
  linux-image-3.13.0-51-powerpc-smp  3.13.0-51.84
  linux-image-3.13.0-51-powerpc64-emb  3.13.0-51.84
  linux-image-3.13.0-51-powerpc64-smp  3.13.0-51.84

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-2588-1
  CVE-2015-2666, CVE-2015-2922

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.13.0-51.84


Ubuntu 2588-1: Linux kernel vulnerabilities

April 30, 2015
Several security issues were fixed in the kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-3.13.0-51-generic 3.13.0-51.84 linux-image-3.13.0-51-generic-lpae 3.13.0-51.84 linux-image-3.13.0-51-lowlatency 3.13.0-51.84 linux-image-3.13.0-51-powerpc-e500 3.13.0-51.84 linux-image-3.13.0-51-powerpc-e500mc 3.13.0-51.84 linux-image-3.13.0-51-powerpc-smp 3.13.0-51.84 linux-image-3.13.0-51-powerpc64-emb 3.13.0-51.84 linux-image-3.13.0-51-powerpc64-smp 3.13.0-51.84 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-2588-1

CVE-2015-2666, CVE-2015-2922

Severity
April 30, 2015

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-51.84

Related News