USN-2660-1: Linux kernel vulnerability

Ubuntu Security Notice USN-2660-1

7th July, 2015

linux vulnerability

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

  • Ubuntu 12.04 LTS

Summary

The system could be made to expose sensitive information over the local applications.

Software description

  • linux - Linux kernel

Details

A race condition was discovered in the Linux kernel's file_handle size
verification. A local user could exploit this flaw to read potentially
sensative memory locations.

Update instructions

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-87-powerpc64-smp 3.2.0-87.125
linux-image-3.2.0-87-powerpc-smp 3.2.0-87.125
linux-image-3.2.0-87-generic-pae 3.2.0-87.125
linux-image-3.2.0-87-virtual 3.2.0-87.125
linux-image-3.2.0-87-highbank 3.2.0-87.125
linux-image-3.2.0-87-omap 3.2.0-87.125
linux-image-3.2.0-87-generic 3.2.0-87.125

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

CVE-2015-1420



from Ubuntu Security Notices http://ift.tt/1JLrNNy