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From: John Johansen <john.johansen@canonical.com>
Reply-To: security@ubuntu.com
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <575A56F2.4000701@canonical.com>
Subject: [USN-2999-1] Linux kernel vulnerability

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==========================================================================
Ubuntu Security Notice USN-2999-1
June 10, 2016

linux vulnerability
==========================================================================

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

- Ubuntu 14.04 LTS

Summary:

The system could be made to crash or run programs as an administrator.

Software Description:
- linux: Linux kernel

Details:

Jann Horn discovered that eCryptfs improperly attempted to use the mmap()
handler of a lower filesystem that did not implement one, causing a
recursive page fault to occur. A local unprivileged attacker could use to
cause a denial of service (system crash) or possibly execute arbitrary code
with administrative privileges.

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-88-generic   3.13.0-88.135
  linux-image-3.13.0-88-generic-lpae  3.13.0-88.135
  linux-image-3.13.0-88-lowlatency  3.13.0-88.135
  linux-image-3.13.0-88-powerpc-e500  3.13.0-88.135
  linux-image-3.13.0-88-powerpc-e500mc  3.13.0-88.135
  linux-image-3.13.0-88-powerpc-smp  3.13.0-88.135
  linux-image-3.13.0-88-powerpc64-emb  3.13.0-88.135
  linux-image-3.13.0-88-powerpc64-smp  3.13.0-88.135

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:
  http://www.ubuntu.com/usn/usn-2999-1
  CVE-2016-1583

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.13.0-88.135



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