==========================================================================
Ubuntu Security Notice USN-3338-1
June 21, 2017

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

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:

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-3.2.0-128-generic 3.2.0-128.173
linux-image-3.2.0-128-generic-pae 3.2.0-128.173
linux-image-3.2.0-128-highbank 3.2.0-128.173
linux-image-3.2.0-128-omap 3.2.0-128.173
linux-image-3.2.0-128-powerpc-smp 3.2.0-128.173
linux-image-3.2.0-128-powerpc64-smp 3.2.0-128.173
linux-image-3.2.0-128-virtual 3.2.0-128.173
linux-image-generic 3.2.0.128.142
linux-image-generic-pae 3.2.0.128.142
linux-image-highbank 3.2.0.128.142
linux-image-omap 3.2.0.128.142
linux-image-powerpc-smp 3.2.0.128.142
linux-image-powerpc64-smp 3.2.0.128.142
linux-image-virtual 3.2.0.128.142

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-3338-1
CVE-2016-4997, CVE-2017-1000364

—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1
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=cvNl
—–END PGP SIGNATURE—–
—