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==========================================================================
Ubuntu Security Notice USN-3338-2
June 29, 2017

linux regression
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel

Details:

USN-3338-1 fixed vulnerabilities in the Linux kernel. However, the fix
for CVE-2017-1000364 introduced regressions for some Java applications.
This update addresses the issue. We apologize for the inconvenience.

Original advisory details:

 It was discovered that the stack guard page for processes in the Linux
 kernel was not sufficiently large enough to prevent overlapping with the
 heap. An attacker could leverage this with another vulnerability to execute
 arbitrary code and gain administrative privileges (CVE-2017-1000364)

 Jesse Hertz and Tim Newsham discovered that the Linux netfilter
 implementation did not correctly perform validation when handling 32 bit
 compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local
 unprivileged attacker could use this to cause a denial of service (system
 crash) or execute arbitrary code with administrative privileges.
 (CVE-2016-4997)

Update instructions:

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

Ubuntu 12.04 ESM:
  linux-image-3.2.0-129-generic   3.2.0-129.174
  linux-image-3.2.0-129-generic-pae  3.2.0-129.174
  linux-image-3.2.0-129-highbank  3.2.0-129.174
  linux-image-3.2.0-129-omap      3.2.0-129.174
  linux-image-3.2.0-129-powerpc-smp  3.2.0-129.174
  linux-image-3.2.0-129-powerpc64-smp  3.2.0-129.174
  linux-image-3.2.0-129-virtual   3.2.0-129.174
  linux-image-generic             3.2.0.129.143
  linux-image-generic-pae         3.2.0.129.143
  linux-image-highbank            3.2.0.129.143
  linux-image-omap                3.2.0.129.143
  linux-image-powerpc             3.2.0.129.143
  linux-image-powerpc-smp         3.2.0.129.143
  linux-image-powerpc64-smp       3.2.0.129.143
  linux-image-virtual             3.2.0.129.143

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://www.ubuntu.com/usn/usn-3338-2
  https://www.ubuntu.com/usn/usn-3338-1
  https://launchpad.net/bugs/1699772


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