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Ubuntu Security Notice USN-3406-1

Ubuntu Security Notice USN-3406-1
Posted Aug 28, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3406-1 - It was discovered that an out of bounds read vulnerability existed in the associative array implementation in the Linux kernel. A local attacker could use this to cause a denial of service or expose sensitive information. It was discovered that a NULL pointer dereference existed in the Direct Rendering Manager driver for VMWare devices in the Linux kernel. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2016-7914, CVE-2017-7261, CVE-2017-7273, CVE-2017-7487, CVE-2017-7495, CVE-2017-7616
SHA-256 | 713a8ec2966db4dfb7a60eb6aba6c8abc38cb940925a7a8602735cf1998e3b56

Ubuntu Security Notice USN-3406-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3406-1
August 28, 2017

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

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel

Details:

It was discovered that an out of bounds read vulnerability existed in the
associative array implementation in the Linux kernel. A local attacker
could use this to cause a denial of service (system crash) or expose
sensitive information. (CVE-2016-7914)

It was discovered that a NULL pointer dereference existed in the Direct
Rendering Manager (DRM) driver for VMWare devices in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2017-7261)

It was discovered that the USB Cypress HID drivers for the Linux kernel did
not properly validate reported information from the device. An attacker
with physical access could use this to expose sensitive information (kernel
memory). (CVE-2017-7273)

A reference count bug was discovered in the Linux kernel ipx protocol
stack. A local attacker could exploit this flaw to cause a denial of
service or possibly other unspecified problems. (CVE-2017-7487)

Huang Weller discovered that the ext4 filesystem implementation in the
Linux kernel mishandled a needs-flushing-before-commit list. A local
attacker could use this to expose sensitive information. (CVE-2017-7495)

It was discovered that an information leak existed in the set_mempolicy and
mbind compat syscalls in the Linux kernel. A local attacker could use this
to expose sensitive information (kernel memory). (CVE-2017-7616)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-129-generic 3.13.0-129.178
linux-image-3.13.0-129-generic-lpae 3.13.0-129.178
linux-image-3.13.0-129-lowlatency 3.13.0-129.178
linux-image-3.13.0-129-powerpc-e500 3.13.0-129.178
linux-image-3.13.0-129-powerpc-e500mc 3.13.0-129.178
linux-image-3.13.0-129-powerpc-smp 3.13.0-129.178
linux-image-3.13.0-129-powerpc64-emb 3.13.0-129.178
linux-image-3.13.0-129-powerpc64-smp 3.13.0-129.178
linux-image-generic 3.13.0.129.138
linux-image-generic-lpae 3.13.0.129.138
linux-image-lowlatency 3.13.0.129.138
linux-image-powerpc-e500 3.13.0.129.138
linux-image-powerpc-e500mc 3.13.0.129.138
linux-image-powerpc-smp 3.13.0.129.138
linux-image-powerpc64-emb 3.13.0.129.138
linux-image-powerpc64-smp 3.13.0.129.138

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-3406-1
CVE-2016-7914, CVE-2017-7261, CVE-2017-7273, CVE-2017-7487,
CVE-2017-7495, CVE-2017-7616

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-129.178

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