ESB-2018.3947 - [Ubuntu] kernel: Multiple vulnerabilities 2018-12-21

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PGP/GPG verifiable version

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3947
                       Linux kernel vulnerabilities
                             21 December 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kernel
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Root Compromise        -- Existing Account
                   Access Privileged Data -- Existing Account
                   Denial of Service      -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-18710 CVE-2018-18690 CVE-2018-18445
                   CVE-2018-18386 CVE-2018-16276 CVE-2018-14734
                   CVE-2018-12896 CVE-2018-10902 CVE-2017-18174
                   CVE-2017-2647  

Reference:         ESB-2018.3584
                   ESB-2017.2807

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3846-1
   http://www.ubuntu.com/usn/usn-3847-1
   http://www.ubuntu.com/usn/usn-3847-2
   http://www.ubuntu.com/usn/usn-3847-3
   http://www.ubuntu.com/usn/usn-3848-1
   http://www.ubuntu.com/usn/usn-3848-2
   http://www.ubuntu.com/usn/usn-3849-1
   http://www.ubuntu.com/usn/usn-3849-2

Comment: This bulletin contains eight (8) Ubuntu security advisories.

- --------------------------BEGIN INCLUDED TEXT--------------------

==========================================================================
Ubuntu Security Notice USN-3846-1
December 20, 2018

linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-raspi2 vulnerability
==========================================================================

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

- - Ubuntu 18.10

Summary:

The system could be made to expose sensitive information.

Software Description:
- - linux: Linux kernel
- - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- - linux-azure: Linux kernel for Microsoft Azure Cloud systems
- - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- - linux-kvm: Linux kernel for cloud environments
- - linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory).

Update instructions:

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

Ubuntu 18.10:
  linux-image-4.18.0-1005-gcp     4.18.0-1005.6
  linux-image-4.18.0-1006-kvm     4.18.0-1006.6
  linux-image-4.18.0-1007-aws     4.18.0-1007.9
  linux-image-4.18.0-1007-azure   4.18.0-1007.7
  linux-image-4.18.0-1008-raspi2  4.18.0-1008.10
  linux-image-4.18.0-13-generic   4.18.0-13.14
  linux-image-4.18.0-13-generic-lpae  4.18.0-13.14
  linux-image-4.18.0-13-lowlatency  4.18.0-13.14
  linux-image-4.18.0-13-snapdragon  4.18.0-13.14
  linux-image-aws                 4.18.0.1007.7
  linux-image-azure               4.18.0.1007.8
  linux-image-gcp                 4.18.0.1005.5
  linux-image-generic             4.18.0.13.14
  linux-image-generic-lpae        4.18.0.13.14
  linux-image-gke                 4.18.0.1005.5
  linux-image-kvm                 4.18.0.1006.6
  linux-image-lowlatency          4.18.0.13.14
  linux-image-raspi2              4.18.0.1008.5
  linux-image-snapdragon          4.18.0.13.14

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-3846-1
  CVE-2018-18710

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.18.0-13.14
  https://launchpad.net/ubuntu/+source/linux-aws/4.18.0-1007.9
  https://launchpad.net/ubuntu/+source/linux-azure/4.18.0-1007.7
  https://launchpad.net/ubuntu/+source/linux-gcp/4.18.0-1005.6
  https://launchpad.net/ubuntu/+source/linux-kvm/4.18.0-1006.6
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.18.0-1008.10

- ------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3847-1
December 20, 2018

linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem,
linux-raspi2 vulnerabilities
==========================================================================

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

- - Ubuntu 18.04 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-azure: Linux kernel for Microsoft Azure Cloud systems
- - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- - linux-kvm: Linux kernel for cloud environments
- - linux-oem: Linux kernel for OEM processors
- - linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

It was discovered that a race condition existed in the raw MIDI driver for
the Linux kernel, leading to a double free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2018-10902)

It was discovered that an integer overrun vulnerability existed in the
POSIX timers implementation in the Linux kernel. A local attacker could use
this to cause a denial of service. (CVE-2018-12896)

Noam Rathaus discovered that a use-after-free vulnerability existed in the
Infiniband implementation in the Linux kernel. An attacker could use this
to cause a denial of service (system crash). (CVE-2018-14734)

It was discovered that the YUREX USB device driver for the Linux kernel did
not properly restrict user space reads or writes. A physically proximate
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-16276)

It was discovered that the BPF verifier in the Linux kernel did not
correctly compute numeric bounds in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2018-18445)

Kanda Motohiro discovered that writing extended attributes to an XFS file
system in the Linux kernel in certain situations could cause an error
condition to occur. A local attacker could use this to cause a denial of
service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-18710)

Update instructions:

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

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1026-gcp     4.15.0-1026.27
  linux-image-4.15.0-1028-kvm     4.15.0-1028.28
  linux-image-4.15.0-1030-oem     4.15.0-1030.35
  linux-image-4.15.0-1030-raspi2  4.15.0-1030.32
  linux-image-4.15.0-1031-aws     4.15.0-1031.33
  linux-image-4.15.0-1036-azure   4.15.0-1036.38
  linux-image-4.15.0-43-generic   4.15.0-43.46
  linux-image-4.15.0-43-generic-lpae  4.15.0-43.46
  linux-image-4.15.0-43-lowlatency  4.15.0-43.46
  linux-image-4.15.0-43-snapdragon  4.15.0-43.46
  linux-image-aws                 4.15.0.1031.30
  linux-image-azure               4.15.0.1036.36
  linux-image-gcp                 4.15.0.1026.28
  linux-image-generic             4.15.0.43.45
  linux-image-generic-lpae        4.15.0.43.45
  linux-image-gke                 4.15.0.1026.28
  linux-image-kvm                 4.15.0.1028.28
  linux-image-lowlatency          4.15.0.43.45
  linux-image-oem                 4.15.0.1030.35
  linux-image-raspi2              4.15.0.1030.28
  linux-image-snapdragon          4.15.0.43.45

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-3847-1
  CVE-2018-10902, CVE-2018-12896, CVE-2018-14734, CVE-2018-16276,
  CVE-2018-18445, CVE-2018-18690, CVE-2018-18710

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.15.0-43.46
  https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1031.33
  https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1036.38
  https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1026.27
  https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1028.28
  https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1030.35
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1030.32

- ------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3847-2
December 20, 2018

linux-hwe, linux-aws-hwe, linux-azure, linux-gcp 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-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- - linux-azure: Linux kernel for Microsoft Azure Cloud systems
- - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- - linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-3847-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu
16.04 LTS.

It was discovered that a race condition existed in the raw MIDI driver for
the Linux kernel, leading to a double free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2018-10902)

It was discovered that an integer overrun vulnerability existed in the
POSIX timers implementation in the Linux kernel. A local attacker could use
this to cause a denial of service. (CVE-2018-12896)

Noam Rathaus discovered that a use-after-free vulnerability existed in the
Infiniband implementation in the Linux kernel. An attacker could use this
to cause a denial of service (system crash). (CVE-2018-14734)

It was discovered that the YUREX USB device driver for the Linux kernel did
not properly restrict user space reads or writes. A physically proximate
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-16276)

It was discovered that the BPF verifier in the Linux kernel did not
correctly compute numeric bounds in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2018-18445)

Kanda Motohiro discovered that writing extended attributes to an XFS file
system in the Linux kernel in certain situations could cause an error
condition to occur. A local attacker could use this to cause a denial of
service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-18710)

Update instructions:

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

Ubuntu 16.04 LTS:
  linux-image-4.15.0-1026-gcp     4.15.0-1026.27~16.04.1
  linux-image-4.15.0-1031-aws     4.15.0-1031.33~16.04.1
  linux-image-4.15.0-1036-azure   4.15.0-1036.38~16.04.1
  linux-image-4.15.0-43-generic   4.15.0-43.46~16.04.1
  linux-image-4.15.0-43-generic-lpae  4.15.0-43.46~16.04.1
  linux-image-4.15.0-43-lowlatency  4.15.0-43.46~16.04.1
  linux-image-aws-hwe             4.15.0.1031.32
  linux-image-azure               4.15.0.1036.41
  linux-image-gcp                 4.15.0.1026.40
  linux-image-generic-hwe-16.04   4.15.0.43.64
  linux-image-generic-lpae-hwe-16.04  4.15.0.43.64
  linux-image-gke                 4.15.0.1026.40
  linux-image-lowlatency-hwe-16.04  4.15.0.43.64

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-3847-2
  https://usn.ubuntu.com/usn/usn-3847-1
  CVE-2018-10902, CVE-2018-12896, CVE-2018-14734, CVE-2018-16276,
  CVE-2018-18445, CVE-2018-18690, CVE-2018-18710

Package Information:
  https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1031.33~16.04.1
  https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1036.38~16.04.1
  https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1026.27~16.04.1
  https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-43.46~16.04.1

- ------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3847-3
December 20, 2018

linux-azure 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-azure: Linux kernel for Microsoft Azure Cloud systems

Details:

USN-3847-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. This update provides the corresponding updates for the Linux
kernel for Microsoft Azure Cloud systems for Ubuntu 14.04 LTS.

It was discovered that a race condition existed in the raw MIDI driver for
the Linux kernel, leading to a double free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2018-10902)

It was discovered that an integer overrun vulnerability existed in the
POSIX timers implementation in the Linux kernel. A local attacker could use
this to cause a denial of service. (CVE-2018-12896)

Noam Rathaus discovered that a use-after-free vulnerability existed in the
Infiniband implementation in the Linux kernel. An attacker could use this
to cause a denial of service (system crash). (CVE-2018-14734)

It was discovered that the YUREX USB device driver for the Linux kernel did
not properly restrict user space reads or writes. A physically proximate
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-16276)

It was discovered that the BPF verifier in the Linux kernel did not
correctly compute numeric bounds in some situations. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2018-18445)

Kanda Motohiro discovered that writing extended attributes to an XFS file
system in the Linux kernel in certain situations could cause an error
condition to occur. A local attacker could use this to cause a denial of
service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-18710)

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-4.15.0-1036-azure   4.15.0-1036.38~14.04.2
  linux-image-azure               4.15.0.1036.23

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-3847-3
  https://usn.ubuntu.com/usn/usn-3847-1
  CVE-2018-10902, CVE-2018-12896, CVE-2018-14734, CVE-2018-16276,
  CVE-2018-18445, CVE-2018-18690, CVE-2018-18710

- ------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3848-1
December 20, 2018

linux, linux-aws, 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-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 double free existed in the AMD GPIO driver in the
Linux kernel. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2017-18174)

It was discovered that an integer overrun vulnerability existed in the
POSIX timers implementation in the Linux kernel. A local attacker could use
this to cause a denial of service. (CVE-2018-12896)

Kanda Motohiro discovered that writing extended attributes to an XFS file
system in the Linux kernel in certain situations could cause an error
condition to occur. A local attacker could use this to cause a denial of
service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-18710)

Update instructions:

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

Ubuntu 16.04 LTS:
  linux-image-4.4.0-1039-kvm      4.4.0-1039.45
  linux-image-4.4.0-1074-aws      4.4.0-1074.84
  linux-image-4.4.0-1102-raspi2   4.4.0-1102.110
  linux-image-4.4.0-1106-snapdragon  4.4.0-1106.111
  linux-image-4.4.0-141-generic   4.4.0-141.167
  linux-image-4.4.0-141-generic-lpae  4.4.0-141.167
  linux-image-4.4.0-141-lowlatency  4.4.0-141.167
  linux-image-4.4.0-141-powerpc-e500mc  4.4.0-141.167
  linux-image-4.4.0-141-powerpc-smp  4.4.0-141.167
  linux-image-4.4.0-141-powerpc64-emb  4.4.0-141.167
  linux-image-4.4.0-141-powerpc64-smp  4.4.0-141.167
  linux-image-aws                 4.4.0.1074.76
  linux-image-generic             4.4.0.141.147
  linux-image-generic-lpae        4.4.0.141.147
  linux-image-kvm                 4.4.0.1039.38
  linux-image-lowlatency          4.4.0.141.147
  linux-image-powerpc-e500mc      4.4.0.141.147
  linux-image-powerpc-smp         4.4.0.141.147
  linux-image-powerpc64-emb       4.4.0.141.147
  linux-image-powerpc64-smp       4.4.0.141.147
  linux-image-raspi2              4.4.0.1102.102
  linux-image-snapdragon          4.4.0.1106.98

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-3848-1
  CVE-2017-18174, CVE-2018-12896, CVE-2018-18690, CVE-2018-18710

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.4.0-141.167
  https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1074.84
  https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1039.45
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1102.110
  https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1106.111

- ------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3848-2
December 20, 2018

linux-lts-xenial, linux-aws 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-aws: Linux kernel for Amazon Web Services (AWS) systems
- - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-3848-1 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 double free existed in the AMD GPIO driver in the
Linux kernel. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2017-18174)

It was discovered that an integer overrun vulnerability existed in the
POSIX timers implementation in the Linux kernel. A local attacker could use
this to cause a denial of service. (CVE-2018-12896)

Kanda Motohiro discovered that writing extended attributes to an XFS file
system in the Linux kernel in certain situations could cause an error
condition to occur. A local attacker could use this to cause a denial of
service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-18710)

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-4.4.0-1037-aws      4.4.0-1037.40
  linux-image-4.4.0-141-generic   4.4.0-141.167~14.04.1
  linux-image-4.4.0-141-generic-lpae  4.4.0-141.167~14.04.1
  linux-image-4.4.0-141-lowlatency  4.4.0-141.167~14.04.1
  linux-image-4.4.0-141-powerpc-e500mc  4.4.0-141.167~14.04.1
  linux-image-4.4.0-141-powerpc-smp  4.4.0-141.167~14.04.1
  linux-image-4.4.0-141-powerpc64-emb  4.4.0-141.167~14.04.1
  linux-image-4.4.0-141-powerpc64-smp  4.4.0-141.167~14.04.1
  linux-image-aws                 4.4.0.1037.37
  linux-image-generic-lpae-lts-xenial  4.4.0.141.121
  linux-image-generic-lts-xenial  4.4.0.141.121
  linux-image-lowlatency-lts-xenial  4.4.0.141.121
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.141.121
  linux-image-powerpc-smp-lts-xenial  4.4.0.141.121
  linux-image-powerpc64-emb-lts-xenial  4.4.0.141.121
  linux-image-powerpc64-smp-lts-xenial  4.4.0.141.121

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-3848-2
  https://usn.ubuntu.com/usn/usn-3848-1
  CVE-2017-18174, CVE-2018-12896, CVE-2018-18690, CVE-2018-18710

Package Information:
  https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1037.40
  https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-141.167~14.04.1

- ------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3849-1
December 20, 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 a NULL pointer dereference existed in the keyring
subsystem of the Linux kernel. A local attacker could use this to cause a
denial of service (system crash). (CVE-2017-2647)

It was discovered that a race condition existed in the raw MIDI driver for
the Linux kernel, leading to a double free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2018-10902)

It was discovered that an integer overrun vulnerability existed in the
POSIX timers implementation in the Linux kernel. A local attacker could use
this to cause a denial of service. (CVE-2018-12896)

Noam Rathaus discovered that a use-after-free vulnerability existed in the
Infiniband implementation in the Linux kernel. An attacker could use this
to cause a denial of service (system crash). (CVE-2018-14734)

It was discovered that the YUREX USB device driver for the Linux kernel did
not properly restrict user space reads or writes. A physically proximate
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-16276)

Tetsuo Handa discovered a logic error in the TTY subsystem of the Linux
kernel. A local attacker with access to pseudo terminal devices could use
this to cause a denial of service. (CVE-2018-18386)

Kanda Motohiro discovered that writing extended attributes to an XFS file
system in the Linux kernel in certain situations could cause an error
condition to occur. A local attacker could use this to cause a denial of
service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-18710)

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-164-generic  3.13.0-164.214
  linux-image-3.13.0-164-generic-lpae  3.13.0-164.214
  linux-image-3.13.0-164-lowlatency  3.13.0-164.214
  linux-image-3.13.0-164-powerpc-e500  3.13.0-164.214
  linux-image-3.13.0-164-powerpc-e500mc  3.13.0-164.214
  linux-image-3.13.0-164-powerpc-smp  3.13.0-164.214
  linux-image-3.13.0-164-powerpc64-emb  3.13.0-164.214
  linux-image-3.13.0-164-powerpc64-smp  3.13.0-164.214
  linux-image-generic             3.13.0.164.174
  linux-image-generic-lpae        3.13.0.164.174
  linux-image-lowlatency          3.13.0.164.174
  linux-image-powerpc-e500        3.13.0.164.174
  linux-image-powerpc-e500mc      3.13.0.164.174
  linux-image-powerpc-smp         3.13.0.164.174
  linux-image-powerpc64-emb       3.13.0.164.174
  linux-image-powerpc64-smp       3.13.0.164.174

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-3849-1
  CVE-2017-2647, CVE-2018-10902, CVE-2018-12896, CVE-2018-14734,
  CVE-2018-16276, CVE-2018-18386, CVE-2018-18690, CVE-2018-18710

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.13.0-164.214

- ------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3849-2
December 20, 2018

linux-lts-trusty vulnerabilities
==========================================================================

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

- - Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- - linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM

Details:

USN-3849-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
12.04 ESM.

It was discovered that a NULL pointer dereference existed in the keyring
subsystem of the Linux kernel. A local attacker could use this to cause a
denial of service (system crash). (CVE-2017-2647)

It was discovered that a race condition existed in the raw MIDI driver for
the Linux kernel, leading to a double free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2018-10902)

It was discovered that an integer overrun vulnerability existed in the
POSIX timers implementation in the Linux kernel. A local attacker could use
this to cause a denial of service. (CVE-2018-12896)

Noam Rathaus discovered that a use-after-free vulnerability existed in the
Infiniband implementation in the Linux kernel. An attacker could use this
to cause a denial of service (system crash). (CVE-2018-14734)

It was discovered that the YUREX USB device driver for the Linux kernel did
not properly restrict user space reads or writes. A physically proximate
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-16276)

Tetsuo Handa discovered a logic error in the TTY subsystem of the Linux
kernel. A local attacker with access to pseudo terminal devices could use
this to cause a denial of service. (CVE-2018-18386)

Kanda Motohiro discovered that writing extended attributes to an XFS file
system in the Linux kernel in certain situations could cause an error
condition to occur. A local attacker could use this to cause a denial of
service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the
CDROM driver of the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-18710)

Update instructions:

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

Ubuntu 12.04 ESM:
  linux-image-3.13.0-164-generic  3.13.0-164.214~precise1
  linux-image-3.13.0-164-generic-lpae  3.13.0-164.214~precise1
  linux-image-generic-lpae-lts-trusty  3.13.0.164.154
  linux-image-generic-lts-trusty  3.13.0.164.154

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-3849-2
  https://usn.ubuntu.com/usn/usn-3849-1
  CVE-2017-2647, CVE-2018-10902, CVE-2018-12896, CVE-2018-14734,
  CVE-2018-16276, CVE-2018-18386, CVE-2018-18690, CVE-2018-18710

- --------------------------END INCLUDED TEXT--------------------

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