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==========================================================================
Ubuntu Security Notice USN-2560-1
April 08, 2015

linux vulnerabilities
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

An integer overflow was discovered in the stack randomization feature of
the Linux kernel on 64 bit platforms. A local attacker could exploit this
flaw to bypass the Address Space Layout Randomization (ASLR) mitigation
mechanism. (CVE-2015-1593)

An information leak was discovered in the Linux kernel's handling of
userspace configuration of the link layer control (LLC). A local user could
exploit this flaw to read data from other sysctl settings. (CVE-2015-2041)

An information leak was discovered in how the Linux kernel handles setting
the Reliable Datagram Sockets (RDS) settings. A local user could exploit
this flaw to read data from other sysctl settings. (CVE-2015-2042)

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-80-generic    3.2.0-80.116
  linux-image-3.2.0-80-generic-pae  3.2.0-80.116
  linux-image-3.2.0-80-highbank   3.2.0-80.116
  linux-image-3.2.0-80-omap       3.2.0-80.116
  linux-image-3.2.0-80-powerpc-smp  3.2.0-80.116
  linux-image-3.2.0-80-powerpc64-smp  3.2.0-80.116
  linux-image-3.2.0-80-virtual    3.2.0-80.116

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:
  http://www.ubuntu.com/usn/usn-2560-1
  CVE-2015-1593, CVE-2015-2041, CVE-2015-2042

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.2.0-80.116



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