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Ubuntu Security Notice USN-3674-1

Ubuntu Security Notice USN-3674-1
Posted Jun 11, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3674-1 - It was discovered that the netfilter subsystem of the Linux kernel did not properly validate ebtables offsets. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a NULL pointer dereference existed in the RDS protocol implementation 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, arbitrary, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2017-0627, CVE-2018-1068, CVE-2018-7492, CVE-2018-8781
SHA-256 | d808284e76889914a80353a1e3422eace8b93049648e16d9582cece4693fb7c1

Ubuntu Security Notice USN-3674-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3674-1
June 11, 2018

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 the netfilter subsystem of the Linux kernel did not
properly validate ebtables offsets. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-1068)

It was discovered that a NULL pointer dereference existed in the RDS
(Reliable Datagram Sockets) protocol implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2018-7492)

Eyal Itkin discovered that the USB displaylink video adapter driver in the
Linux kernel did not properly validate mmap offsets sent from userspace. A
local attacker could use this to expose sensitive information (kernel
memory) or possibly execute arbitrary code. (CVE-2018-8781)

Xingyuan Lin discovered that a out-of-bounds read existed in the USB Video
Class (UVC) driver of the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2017-0627)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-151-generic 3.13.0-151.201
linux-image-3.13.0-151-generic-lpae 3.13.0-151.201
linux-image-3.13.0-151-lowlatency 3.13.0-151.201
linux-image-3.13.0-151-powerpc-e500 3.13.0-151.201
linux-image-3.13.0-151-powerpc-e500mc 3.13.0-151.201
linux-image-3.13.0-151-powerpc-smp 3.13.0-151.201
linux-image-3.13.0-151-powerpc64-emb 3.13.0-151.201
linux-image-3.13.0-151-powerpc64-smp 3.13.0-151.201
linux-image-generic 3.13.0.151.161
linux-image-generic-lpae 3.13.0.151.161
linux-image-lowlatency 3.13.0.151.161
linux-image-powerpc-e500 3.13.0.151.161
linux-image-powerpc-e500mc 3.13.0.151.161
linux-image-powerpc-smp 3.13.0.151.161
linux-image-powerpc64-emb 3.13.0.151.161
linux-image-powerpc64-smp 3.13.0.151.161

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://usn.ubuntu.com/usn/usn-3674-1
CVE-2017-0627, CVE-2018-1068, CVE-2018-7492, CVE-2018-8781

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-151.201

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