Ubuntu Security Notice 3106-2 - USN-3106-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges. Various other issues were also addressed.
926b3aca0acb71dd8364c923524df46af106987d2fa4f9d5ea71d8c3cbc34fee
==========================================================================
Ubuntu Security Notice USN-3106-2
October 20, 2016
linux-lts-xenial vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Summary:
The system could be made to run programs as an administrator.
Software Description:
- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
Details:
USN-3106-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.
It was discovered that a race condition existed in the memory manager of
the Linux kernel when handling copy-on-write breakage of private read-only
memory mappings. A local attacker could use this to gain administrative
privileges.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-4.4.0-45-generic 4.4.0-45.66~14.04.1
linux-image-4.4.0-45-generic-lpae 4.4.0-45.66~14.04.1
linux-image-4.4.0-45-lowlatency 4.4.0-45.66~14.04.1
linux-image-4.4.0-45-powerpc-e500mc 4.4.0-45.66~14.04.1
linux-image-4.4.0-45-powerpc-smp 4.4.0-45.66~14.04.1
linux-image-4.4.0-45-powerpc64-emb 4.4.0-45.66~14.04.1
linux-image-4.4.0-45-powerpc64-smp 4.4.0-45.66~14.04.1
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-3106-2
http://www.ubuntu.com/usn/usn-3106-1
CVE-2016-5195
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-45.66~14.04.1
--+1TulI7fc0PCHNy3
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=vxu2
-----END PGP SIGNATURE-----
--+1TulI7fc0PCHNy3--