The following updates has been released for Ubuntu Linux:

USN-3483-2: procmail vulnerability
USN-3484-1: Linux kernel vulnerability
USN-3484-2: Linux kernel (HWE) vulnerability
USN-3485-1: Linux kernel vulnerabilities
USN-3485-2: Linux kernel (Xenial HWE) vulnerabilities
USN-3486-1: Samba vulnerabilities

USN-3483-2: procmail vulnerability

==========================================================================
Ubuntu Security Notice USN-3483-2
November 21, 2017

procmail vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

formail could be made to crash or run programs if it processed
specially crafted mail.

Software Description:
- procmail: Versatile e-mail processor

Details:

USN-3483-1 fixed a vulnerability in procmail. This update provides the
corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Jakub Wilk discovered that the formail tool incorrectly handled
 certain malformed mail messages. An attacker could use this flaw to
 cause formail to crash, resulting in a denial of service, or possibly
 execute arbitrary code.

Update instructions:

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

Ubuntu 12.04 ESM:
  procmail 3.22-19ubuntu0.2

In general, a standard system update will make all the necessary
changes.

References:
  https://www.ubuntu.com/usn/usn-3483-2
  https://www.ubuntu.com/usn/usn-3483-1
  CVE-2017-16844

USN-3484-1: Linux kernel vulnerability

=========================================================================
Ubuntu Security Notice USN-3484-1
November 21, 2017

linux, linux-raspi2 vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.04

Summary:

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

Software Description:
- linux: Linux kernel
- linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

It was discovered that the KVM subsystem in the Linux kernel did not
properly keep track of nested levels in guest page tables. A local attacker
in a guest VM could use this to cause a denial of service (host OS crash)
or possibly execute arbitrary code in the host OS.

Update instructions:

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

Ubuntu 17.04:
linux-image-4.10.0-1021-raspi2 4.10.0-1021.24
linux-image-4.10.0-40-generic 4.10.0-40.44
linux-image-4.10.0-40-generic-lpae 4.10.0-40.44
linux-image-4.10.0-40-lowlatency 4.10.0-40.44
linux-image-generic 4.10.0.40.40
linux-image-generic-lpae 4.10.0.40.40
linux-image-lowlatency 4.10.0.40.40
linux-image-raspi2 4.10.0.1021.22

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-3484-1
CVE-2017-12188

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.10.0-40.44
https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1021.24

USN-3484-2: Linux kernel (HWE) vulnerability

=========================================================================
Ubuntu Security Notice USN-3484-2
November 21, 2017

linux-hwe vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

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

Software Description:
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-3484-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04.
This update provides the corresponding updates for the Linux Hardware
Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS.

It was discovered that the KVM subsystem in the Linux kernel did not
properly keep track of nested levels in guest page tables. A local attacker
in a guest VM could use this to cause a denial of service (host OS crash)
or possibly execute arbitrary code in the host OS.

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.10.0-40-generic 4.10.0-40.44~16.04.1
linux-image-4.10.0-40-generic-lpae 4.10.0-40.44~16.04.1
linux-image-4.10.0-40-lowlatency 4.10.0-40.44~16.04.1
linux-image-generic-hwe-16.04 4.10.0.40.42
linux-image-generic-lpae-hwe-16.04 4.10.0.40.42
linux-image-lowlatency-hwe-16.04 4.10.0.40.42

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-3484-2
https://www.ubuntu.com/usn/usn-3484-1
CVE-2017-12188

Package Information:
https://launchpad.net/ubuntu/+source/linux-hwe/4.10.0-40.44~16.04.1

USN-3485-1: Linux kernel vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3485-1
November 21, 2017

linux, linux-aws, linux-gke, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-gke: Linux kernel for Google Container Engine (GKE) systems
- linux-kvm: Linux kernel for cloud environments
- linux-raspi2: Linux kernel for Raspberry Pi 2
- linux-snapdragon: Linux kernel for Snapdragon processors

Details:

It was discovered that a race condition existed in the ALSA subsystem of
the Linux kernel when creating and deleting a port via ioctl(). A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-15265)

Eric Biggers discovered that the key management subsystem in the Linux
kernel did not properly restrict adding a key that already exists but is
uninstantiated. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2017-15299)

It was discovered that a race condition existed in the packet fanout
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-15649)

Eric Biggers discovered a race condition in the key management subsystem of
the Linux kernel around keys in a negative state. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-15951)

Andrey Konovalov discovered a use-after-free vulnerability in the USB
serial console driver in the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2017-16525)

Andrey Konovalov discovered that the Ultra Wide Band driver in the Linux
kernel did not properly check for an error condition. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2017-16526)

Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-16527)

Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel did
not properly validate USB audio buffer descriptors. A physically proximate
attacker could use this cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-16529)

Andrey Konovalov discovered that the USB unattached storage driver in the
Linux kernel contained out-of-bounds error when handling alternative
settings. A physically proximate attacker could use to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2017-16530)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate USB interface association descriptors. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2017-16531)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate USB HID descriptors. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2017-16533)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate CDC metadata. A physically proximate attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16534)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate USB BOS metadata. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2017-16535)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.4.0-101-generic 4.4.0-101.124
linux-image-4.4.0-101-generic-lpae 4.4.0-101.124
linux-image-4.4.0-101-lowlatency 4.4.0-101.124
linux-image-4.4.0-101-powerpc-e500mc 4.4.0-101.124
linux-image-4.4.0-101-powerpc-smp 4.4.0-101.124
linux-image-4.4.0-101-powerpc64-emb 4.4.0-101.124
linux-image-4.4.0-101-powerpc64-smp 4.4.0-101.124
linux-image-4.4.0-1010-kvm 4.4.0-1010.15
linux-image-4.4.0-1034-gke 4.4.0-1034.34
linux-image-4.4.0-1041-aws 4.4.0-1041.50
linux-image-4.4.0-1077-raspi2 4.4.0-1077.85
linux-image-4.4.0-1079-snapdragon 4.4.0-1079.84
linux-image-aws 4.4.0.1041.43
linux-image-generic 4.4.0.101.106
linux-image-generic-lpae 4.4.0.101.106
linux-image-gke 4.4.0.1034.35
linux-image-kvm 4.4.0.1010.10
linux-image-lowlatency 4.4.0.101.106
linux-image-powerpc-e500mc 4.4.0.101.106
linux-image-powerpc-smp 4.4.0.101.106
linux-image-powerpc64-emb 4.4.0.101.106
linux-image-powerpc64-smp 4.4.0.101.106
linux-image-raspi2 4.4.0.1077.77
linux-image-snapdragon 4.4.0.1079.71

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-3485-1
CVE-2017-15265, CVE-2017-15299, CVE-2017-15649, CVE-2017-15951,
CVE-2017-16525, CVE-2017-16526, CVE-2017-16527, CVE-2017-16529,
CVE-2017-16530, CVE-2017-16531, CVE-2017-16533, CVE-2017-16534,
CVE-2017-16535

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-101.124
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1041.50
https://launchpad.net/ubuntu/+source/linux-gke/4.4.0-1034.34
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1010.15
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1077.85
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1079.84

USN-3485-2: Linux kernel (Xenial HWE) vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3485-2
November 21, 2017

linux-lts-xenial 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-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-3485-1 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 ALSA subsystem of
the Linux kernel when creating and deleting a port via ioctl(). A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-15265)

Eric Biggers discovered that the key management subsystem in the Linux
kernel did not properly restrict adding a key that already exists but is
uninstantiated. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2017-15299)

It was discovered that a race condition existed in the packet fanout
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-15649)

Eric Biggers discovered a race condition in the key management subsystem of
the Linux kernel around keys in a negative state. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-15951)

Andrey Konovalov discovered a use-after-free vulnerability in the USB
serial console driver in the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2017-16525)

Andrey Konovalov discovered that the Ultra Wide Band driver in the Linux
kernel did not properly check for an error condition. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2017-16526)

Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-16527)

Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel did
not properly validate USB audio buffer descriptors. A physically proximate
attacker could use this cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-16529)

Andrey Konovalov discovered that the USB unattached storage driver in the
Linux kernel contained out-of-bounds error when handling alternative
settings. A physically proximate attacker could use to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2017-16530)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate USB interface association descriptors. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2017-16531)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate USB HID descriptors. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2017-16533)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate CDC metadata. A physically proximate attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16534)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate USB BOS metadata. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2017-16535)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-4.4.0-101-generic 4.4.0-101.124~14.04.1
linux-image-4.4.0-101-generic-lpae 4.4.0-101.124~14.04.1
linux-image-4.4.0-101-lowlatency 4.4.0-101.124~14.04.1
linux-image-4.4.0-101-powerpc-e500mc 4.4.0-101.124~14.04.1
linux-image-4.4.0-101-powerpc-smp 4.4.0-101.124~14.04.1
linux-image-4.4.0-101-powerpc64-emb 4.4.0-101.124~14.04.1
linux-image-4.4.0-101-powerpc64-smp 4.4.0-101.124~14.04.1
linux-image-generic-lpae-lts-xenial 4.4.0.101.84
linux-image-generic-lts-xenial 4.4.0.101.84
linux-image-lowlatency-lts-xenial 4.4.0.101.84
linux-image-powerpc-e500mc-lts-xenial 4.4.0.101.84
linux-image-powerpc-smp-lts-xenial 4.4.0.101.84
linux-image-powerpc64-emb-lts-xenial 4.4.0.101.84
linux-image-powerpc64-smp-lts-xenial 4.4.0.101.84

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-3485-2
https://www.ubuntu.com/usn/usn-3485-1
CVE-2017-15265, CVE-2017-15299, CVE-2017-15649, CVE-2017-15951,
CVE-2017-16525, CVE-2017-16526, CVE-2017-16527, CVE-2017-16529,
CVE-2017-16530, CVE-2017-16531, CVE-2017-16533, CVE-2017-16534,
CVE-2017-16535

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-101.124~14.04.1

USN-3486-1: Samba vulnerabilities

==========================================================================
Ubuntu Security Notice USN-3486-1
November 21, 2017

samba vulnerabilities
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Samba.

Software Description:
- samba: SMB/CIFS file, print, and login server for Unix

Details:

Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory
when processing certain SMB1 requests. A remote attacker could possibly use
this issue to execute arbitrary code. (CVE-2017-14746)

Volker Lendecke discovered that Samba incorrectly cleared memory when
returning data to a client. A remote attacker could possibly use this issue
to obtain sensitive information. (CVE-2017-15275)

Update instructions:

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

Ubuntu 17.10:
samba 2:4.6.7+dfsg-1ubuntu3.1

Ubuntu 17.04:
samba 2:4.5.8+dfsg-0ubuntu0.17.04.8

Ubuntu 16.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.16.04.12

Ubuntu 14.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.14.04.13

In general, a standard system update will make all the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3486-1
CVE-2017-14746, CVE-2017-15275

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.6.7+dfsg-1ubuntu3.1
https://launchpad.net/ubuntu/+source/samba/2:4.5.8+dfsg-0ubuntu0.17.04.8
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.12
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.13