Updated Linux kernels has been released for Ubuntu Linux:

USN-3752-1: Linux kernel vulnerabilities
USN-3752-2: Linux kernel (HWE) vulnerabilities
USN-3753-1: Linux kernel vulnerabilities
USN-3753-2: Linux kernel (Xenial HWE) vulnerabilities
USN-3754-1: Linux kernel vulnerabilities

USN-3752-1: Linux kernel vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3752-1
August 24, 2018

linux, linux-aws, linux-gcp, linux-kvm, 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-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, when attempting to handle an out-of-memory
situation, a null pointer dereference could be triggered in the Linux
kernel in some circumstances. A local attacker could use this to cause a
denial of service (system crash). (CVE-2018-1000200)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly validate meta-data information. An attacker could
use this to construct a malicious xfs image that, when mounted, could cause
a denial of service (system crash). (CVE-2018-10323)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly validate xattr information. An attacker could use
this to construct a malicious xfs image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10840)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly keep meta-data information consistent in some
situations. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10881)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly handle corrupted meta data in some situations. An
attacker could use this to specially craft an ext4 filesystem that caused a
denial of service (system crash) when mounted. (CVE-2018-1093)

Jann Horn discovered that the Linux kernel's implementation of random seed
data reported that it was in a ready state before it had gathered
sufficient entropy. An attacker could use this to expose sensitive
information. (CVE-2018-1108)

It was discovered that the procfs filesystem did not properly handle
processes mapping some memory elements onto files. A local attacker could
use this to block utilities that examine the procfs filesystem to report
operating system state, such as ps(1). (CVE-2018-1120)

Jann Horn discovered that the ext4 filesystem implementation in the Linux
kernel did not properly keep xattr information consistent in some
situations. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-11412)

Piotr Gabriel Kosinski and Daniel Shapira discovered a stack-based buffer
overflow in the CDROM driver implementation of the Linux kernel. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-11506)

Shankara Pailoor discovered that a race condition existed in the socket
handling code in the Linux kernel. A local attacker could use this to cause
a denial of service (system crash). (CVE-2018-12232)

Shankara Pailoor discovered that the JFS filesystem implementation in the
Linux kernel contained a buffer overflow when handling extended attributes.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2018-12233)

Felix Wilhelm discovered that the KVM implementation in the Linux kernel
did not properly perform permission checks in some situations when nested
virtualization is used. An attacker in a guest VM could possibly use this
to escape into an outer VM or the host OS. (CVE-2018-12904)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly handle an error condition with a corrupted xfs
image. An attacker could use this to construct a malicious xfs image that,
when mounted, could cause a denial of service (system crash).
(CVE-2018-13094)

It was discovered that the Linux kernel did not properly handle setgid file
creation when performed by a non-member of the group. A local attacker
could use this to gain elevated privileges. (CVE-2018-13405)

Silvio Cesare discovered that the generic VESA frame buffer driver in the
Linux kernel contained an integer overflow. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-13406)

Jakub Jirasek discovered that multiple use-after-free errors existed in the
USB/IP 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-2018-5814)

It was discovered that a race condition existed in the ARM Advanced
Microcontroller Bus Architecture (AMBA) driver in the Linux kernel that
could result in a double free. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-9415)

It was discovered that an information leak existed in the generic SCSI
driver in the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-1000204)

Update instructions:

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

Ubuntu 18.04 LTS:
linux-image-4.15.0-1018-gcp 4.15.0-1018.19
linux-image-4.15.0-1020-aws 4.15.0-1020.20
linux-image-4.15.0-1020-kvm 4.15.0-1020.20
linux-image-4.15.0-1021-raspi2 4.15.0-1021.23
linux-image-4.15.0-33-generic 4.15.0-33.36
linux-image-4.15.0-33-generic-lpae 4.15.0-33.36
linux-image-4.15.0-33-lowlatency 4.15.0-33.36
linux-image-4.15.0-33-snapdragon 4.15.0-33.36
linux-image-aws 4.15.0.1020.20
linux-image-gcp 4.15.0.1018.20
linux-image-generic 4.15.0.33.35
linux-image-generic-lpae 4.15.0.33.35
linux-image-gke 4.15.0.1018.20
linux-image-kvm 4.15.0.1020.20
linux-image-lowlatency 4.15.0.33.35
linux-image-raspi2 4.15.0.1021.19
linux-image-snapdragon 4.15.0.33.35

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-3752-1
CVE-2018-1000200, CVE-2018-1000204, CVE-2018-10323, CVE-2018-10840,
CVE-2018-10881, CVE-2018-1093, CVE-2018-1108, CVE-2018-1120,
CVE-2018-11412, CVE-2018-11506, CVE-2018-12232, CVE-2018-12233,
CVE-2018-12904, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406,
CVE-2018-5814, CVE-2018-9415

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-33.36
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1020.20
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1018.19
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1020.20
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1021.23

USN-3752-2: Linux kernel (HWE) vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3752-2
August 24, 2018

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

Details:

USN-3752-1 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, when attempting to handle an out-of-memory
situation, a null pointer dereference could be triggered in the Linux
kernel in some circumstances. A local attacker could use this to cause a
denial of service (system crash). (CVE-2018-1000200)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly validate meta-data information. An attacker could
use this to construct a malicious xfs image that, when mounted, could cause
a denial of service (system crash). (CVE-2018-10323)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly validate xattr information. An attacker could use
this to construct a malicious xfs image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10840)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly keep meta-data information consistent in some
situations. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10881)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly handle corrupted meta data in some situations. An
attacker could use this to specially craft an ext4 filesystem that caused a
denial of service (system crash) when mounted. (CVE-2018-1093)

Jann Horn discovered that the Linux kernel's implementation of random seed
data reported that it was in a ready state before it had gathered
sufficient entropy. An attacker could use this to expose sensitive
information. (CVE-2018-1108)

It was discovered that the procfs filesystem did not properly handle
processes mapping some memory elements onto files. A local attacker could
use this to block utilities that examine the procfs filesystem to report
operating system state, such as ps(1). (CVE-2018-1120)

Jann Horn discovered that the ext4 filesystem implementation in the Linux
kernel did not properly keep xattr information consistent in some
situations. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-11412)

Piotr Gabriel Kosinski and Daniel Shapira discovered a stack-based buffer
overflow in the CDROM driver implementation of the Linux kernel. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-11506)

Shankara Pailoor discovered that a race condition existed in the socket
handling code in the Linux kernel. A local attacker could use this to cause
a denial of service (system crash). (CVE-2018-12232)

Shankara Pailoor discovered that the JFS filesystem implementation in the
Linux kernel contained a buffer overflow when handling extended attributes.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2018-12233)

Felix Wilhelm discovered that the KVM implementation in the Linux kernel
did not properly perform permission checks in some situations when nested
virtualization is used. An attacker in a guest VM could possibly use this
to escape into an outer VM or the host OS. (CVE-2018-12904)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly handle an error condition with a corrupted xfs
image. An attacker could use this to construct a malicious xfs image that,
when mounted, could cause a denial of service (system crash).
(CVE-2018-13094)

It was discovered that the Linux kernel did not properly handle setgid file
creation when performed by a non-member of the group. A local attacker
could use this to gain elevated privileges. (CVE-2018-13405)

Silvio Cesare discovered that the generic VESA frame buffer driver in the
Linux kernel contained an integer overflow. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-13406)

Jakub Jirasek discovered that multiple use-after-free errors existed in the
USB/IP 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-2018-5814)

It was discovered that a race condition existed in the ARM Advanced
Microcontroller Bus Architecture (AMBA) driver in the Linux kernel that
could result in a double free. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-9415)

It was discovered that an information leak existed in the generic SCSI
driver in the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-1000204)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.15.0-33-generic 4.15.0-33.36~16.04.1
linux-image-4.15.0-33-generic-lpae 4.15.0-33.36~16.04.1
linux-image-4.15.0-33-lowlatency 4.15.0-33.36~16.04.1
linux-image-generic-hwe-16.04 4.15.0.33.55
linux-image-generic-lpae-hwe-16.04 4.15.0.33.55
linux-image-lowlatency-hwe-16.04 4.15.0.33.55

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-3752-2
https://usn.ubuntu.com/usn/usn-3752-1
CVE-2018-1000200, CVE-2018-1000204, CVE-2018-10323, CVE-2018-10840,
CVE-2018-10881, CVE-2018-1093, CVE-2018-1108, CVE-2018-1120,
CVE-2018-11412, CVE-2018-11506, CVE-2018-12232, CVE-2018-12233,
CVE-2018-12904, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406,
CVE-2018-5814, CVE-2018-9415

Package Information:
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-33.36~16.04.1

USN-3753-1: Linux kernel vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3753-1
August 24, 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 the generic SCSI driver in the Linux kernel did not
properly enforce permissions on kernel memory access. A local attacker
could use this to expose sensitive information or possibly elevate
privileges. (CVE-2017-13168)

Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)

Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)

Wen Xu discovered that an out-of-bounds write vulnerability existed in the
ext4 filesystem implementation in the Linux kernel. An attacker could use
this to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10878, CVE-2018-10882)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly keep meta-data information consistent in some
situations. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10881)

Shankara Pailoor discovered that the JFS filesystem implementation in the
Linux kernel contained a buffer overflow when handling extended attributes.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2018-12233)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly handle an error condition with a corrupted xfs
image. An attacker could use this to construct a malicious xfs image that,
when mounted, could cause a denial of service (system crash).
(CVE-2018-13094)

It was discovered that the Linux kernel did not properly handle setgid file
creation when performed by a non-member of the group. A local attacker
could use this to gain elevated privileges. (CVE-2018-13405)

Silvio Cesare discovered that the generic VESA frame buffer driver in the
Linux kernel contained an integer overflow. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-13406)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.4.0-1032-kvm 4.4.0-1032.38
linux-image-4.4.0-1066-aws 4.4.0-1066.76
linux-image-4.4.0-1095-raspi2 4.4.0-1095.103
linux-image-4.4.0-1099-snapdragon 4.4.0-1099.104
linux-image-4.4.0-134-generic 4.4.0-134.160
linux-image-4.4.0-134-generic-lpae 4.4.0-134.160
linux-image-4.4.0-134-lowlatency 4.4.0-134.160
linux-image-4.4.0-134-powerpc-e500mc 4.4.0-134.160
linux-image-4.4.0-134-powerpc-smp 4.4.0-134.160
linux-image-4.4.0-134-powerpc64-emb 4.4.0-134.160
linux-image-4.4.0-134-powerpc64-smp 4.4.0-134.160
linux-image-aws 4.4.0.1066.68
linux-image-generic 4.4.0.134.140
linux-image-generic-lpae 4.4.0.134.140
linux-image-kvm 4.4.0.1032.31
linux-image-lowlatency 4.4.0.134.140
linux-image-powerpc-e500mc 4.4.0.134.140
linux-image-powerpc-smp 4.4.0.134.140
linux-image-powerpc64-emb 4.4.0.134.140
linux-image-powerpc64-smp 4.4.0.134.140
linux-image-raspi2 4.4.0.1095.95
linux-image-snapdragon 4.4.0.1099.91

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-3753-1
CVE-2017-13168, CVE-2018-10876, CVE-2018-10877, CVE-2018-10878,
CVE-2018-10879, CVE-2018-10881, CVE-2018-10882, CVE-2018-12233,
CVE-2018-13094, CVE-2018-13405, CVE-2018-13406

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-134.160
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1066.76
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1032.38
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1095.103
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1099.104

USN-3753-2: Linux kernel (Xenial HWE) vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3753-2
August 24, 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-3753-1 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 the generic SCSI driver in the Linux kernel did not
properly enforce permissions on kernel memory access. A local attacker
could use this to expose sensitive information or possibly elevate
privileges. (CVE-2017-13168)

Wen Xu discovered that a use-after-free vulnerability existed in the ext4
filesystem implementation in the Linux kernel. An attacker could use this
to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10876, CVE-2018-10879)

Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)

Wen Xu discovered that an out-of-bounds write vulnerability existed in the
ext4 filesystem implementation in the Linux kernel. An attacker could use
this to construct a malicious ext4 image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-10878, CVE-2018-10882)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly keep meta-data information consistent in some
situations. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10881)

Shankara Pailoor discovered that the JFS filesystem implementation in the
Linux kernel contained a buffer overflow when handling extended attributes.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2018-12233)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly handle an error condition with a corrupted xfs
image. An attacker could use this to construct a malicious xfs image that,
when mounted, could cause a denial of service (system crash).
(CVE-2018-13094)

It was discovered that the Linux kernel did not properly handle setgid file
creation when performed by a non-member of the group. A local attacker
could use this to gain elevated privileges. (CVE-2018-13405)

Silvio Cesare discovered that the generic VESA frame buffer driver in the
Linux kernel contained an integer overflow. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-13406)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-4.4.0-1028-aws 4.4.0-1028.31
linux-image-4.4.0-134-generic 4.4.0-134.160~14.04.1
linux-image-4.4.0-134-generic-lpae 4.4.0-134.160~14.04.1
linux-image-4.4.0-134-lowlatency 4.4.0-134.160~14.04.1
linux-image-4.4.0-134-powerpc-e500mc 4.4.0-134.160~14.04.1
linux-image-4.4.0-134-powerpc-smp 4.4.0-134.160~14.04.1
linux-image-4.4.0-134-powerpc64-emb 4.4.0-134.160~14.04.1
linux-image-4.4.0-134-powerpc64-smp 4.4.0-134.160~14.04.1
linux-image-aws 4.4.0.1028.28
linux-image-generic-lpae-lts-xenial 4.4.0.134.114
linux-image-generic-lts-xenial 4.4.0.134.114
linux-image-lowlatency-lts-xenial 4.4.0.134.114
linux-image-powerpc-e500mc-lts-xenial 4.4.0.134.114
linux-image-powerpc-smp-lts-xenial 4.4.0.134.114
linux-image-powerpc64-emb-lts-xenial 4.4.0.134.114
linux-image-powerpc64-smp-lts-xenial 4.4.0.134.114

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-3753-2
https://usn.ubuntu.com/usn/usn-3753-1
CVE-2017-13168, CVE-2018-10876, CVE-2018-10877, CVE-2018-10878,
CVE-2018-10879, CVE-2018-10881, CVE-2018-10882, CVE-2018-12233,
CVE-2018-13094, CVE-2018-13405, CVE-2018-13406

Package Information:
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1028.31
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-134.160~14.04.1

USN-3754-1: Linux kernel vulnerabilities

==========================================================================
Ubuntu Security Notice USN-3754-1
August 24, 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:

Ralf Spenneberg discovered that the ext4 implementation in the Linux kernel
did not properly validate meta block groups. An attacker with physical
access could use this to specially craft an ext4 image that causes a denial
of service (system crash). (CVE-2016-10208)

It was discovered that an information disclosure vulnerability existed in
the ACPI implementation of the Linux kernel. A local attacker could use
this to expose sensitive information (kernel memory addresses).
(CVE-2017-11472)

It was discovered that a buffer overflow existed in the ACPI table parsing
implementation in the Linux kernel. A local attacker could use this to
construct a malicious ACPI table that, when loaded, caused a denial of
service (system crash) or possibly execute arbitrary code.
(CVE-2017-11473)

It was discovered that the generic SCSI driver in the Linux kernel did not
properly initialize data returned to user space in some situations. A local
attacker could use this to expose sensitive information (kernel memory).
(CVE-2017-14991)

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)

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 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 usbtest device driver in the Linux
kernel did not properly validate endpoint metadata. A physically proximate
attacker could use this to cause a denial of service (system crash).
(CVE-2017-16532)

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 USB BOS metadata. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2017-16535)

Andrey Konovalov discovered that the Conexant cx231xx USB video capture
driver in the Linux kernel did not properly validate interface descriptors.
A physically proximate attacker could use this to cause a denial of service
(system crash). (CVE-2017-16536)

Andrey Konovalov discovered that the SoundGraph iMON USB driver in the
Linux kernel did not properly validate device metadata. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2017-16537)

It was discovered that the DM04/QQBOX USB driver in the Linux kernel did
not properly handle device attachment and warm-start. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2017-16538)

Andrey Konovalov discovered an out-of-bounds read in the GTCO digitizer USB
driver for the Linux kernel. A physically proximate attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-16643)

Andrey Konovalov discovered that the video4linux driver for Hauppauge HD
PVR USB devices in the Linux kernel did not properly handle some error
conditions. A physically proximate attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2017-16644)

Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver
in the Linux kernel did not properly validate device descriptors. A
physically proximate attacker could use this to cause a denial of service
(system crash). (CVE-2017-16645)

Andrey Konovalov discovered that the QMI WWAN USB driver did not properly
validate device descriptors. A physically proximate attacker could use this
to cause a denial of service (system crash). (CVE-2017-16650)

It was discovered that the USB Virtual Host Controller Interface (VHCI)
driver in the Linux kernel contained an information disclosure
vulnerability. A physically proximate attacker could use this to expose
sensitive information (kernel memory). (CVE-2017-16911)

It was discovered that the USB over IP implementation in the Linux kernel
did not validate endpoint numbers. A remote attacker could use this to
cause a denial of service (system crash). (CVE-2017-16912)

It was discovered that the USB over IP implementation in the Linux kernel
did not properly validate CMD_SUBMIT packets. A remote attacker could use
this to cause a denial of service (excessive memory consumption).
(CVE-2017-16913)

It was discovered that the USB over IP implementation in the Linux kernel
contained a NULL pointer dereference error. A remote attacker could use
this to cause a denial of service (system crash). (CVE-2017-16914)

It was discovered that the core USB subsystem in the Linux kernel did not
validate the number of configurations and interfaces in a device. A
physically proximate attacker could use this to cause a denial of service
(system crash). (CVE-2017-17558)

It was discovered that an integer overflow existed in the perf subsystem of
the Linux kernel. A local attacker could use this to cause a denial of
service (system crash). (CVE-2017-18255)

It was discovered that the keyring subsystem in the Linux kernel did not
properly prevent a user from creating keyrings for other users. A local
attacker could use this cause a denial of service or expose sensitive
information. (CVE-2017-18270)

Andy Lutomirski and Willy Tarreau discovered that the KVM implementation in
the Linux kernel did not properly emulate instructions on the SS segment
register. A local attacker in a guest virtual machine could use this to
cause a denial of service (guest OS crash) or possibly gain administrative
privileges in the guest OS. (CVE-2017-2583)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel
improperly emulated certain instructions. A local attacker could use this
to obtain sensitive information (kernel memory). (CVE-2017-2584)

It was discovered that the KLSI KL5KUSB105 serial-to-USB device driver in
the Linux kernel did not properly initialize memory related to logging. A
local attacker could use this to expose sensitive information (kernel
memory). (CVE-2017-5549)

Andrey Konovalov discovered an out-of-bounds access in the IPv6 Generic
Routing Encapsulation (GRE) tunneling implementation in the Linux kernel.
An attacker could use this to possibly expose sensitive information.
(CVE-2017-5897)

Andrey Konovalov discovered that the LLC subsytem in the Linux kernel did
not properly set up a destructor in certain situations. A local attacker
could use this to cause a denial of service (system crash). (CVE-2017-6345)

Dmitry Vyukov discovered race conditions in the Infrared (IrDA) subsystem
in the Linux kernel. A local attacker could use this to cause a denial of
service (deadlock). (CVE-2017-6348)

Andy Lutomirski discovered that the KVM implementation in the Linux kernel
was vulnerable to a debug exception error when single-stepping through a
syscall. A local attacker in a non-Linux guest vm could possibly use this
to gain administrative privileges in the guest vm. (CVE-2017-7518)

Tuomas Haanpää and Ari Kauppi discovered that the NFSv2 and NFSv3 server
implementations in the Linux kernel did not properly handle certain long
RPC replies. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2017-7645)

Pengfei Wang discovered that a race condition existed in the NXP SAA7164 TV
Decoder driver for the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-8831)

Pengfei Wang discovered that the Turtle Beach MultiSound audio device
driver in the Linux kernel contained race conditions when fetching from the
ring-buffer. A local attacker could use this to cause a denial of service
(infinite loop). (CVE-2017-9984, CVE-2017-9985)

It was discovered that the wait4() system call in the Linux kernel did not
properly validate its arguments in some situations. A local attacker could
possibly use this to cause a denial of service. (CVE-2018-10087)

It was discovered that the kill() system call implementation in the Linux
kernel did not properly validate its arguments in some situations. A local
attacker could possibly use this to cause a denial of service.
(CVE-2018-10124)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly validate meta-data information. An attacker could
use this to construct a malicious xfs image that, when mounted, could cause
a denial of service (system crash). (CVE-2018-10323)

Zhong Jiang discovered that a use-after-free vulnerability existed in the
NUMA memory policy 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-2018-10675)

Wen Xu discovered that a buffer overflow existed in the ext4 filesystem
implementation in the Linux kernel. An attacker could use this to construct
a malicious ext4 image that, when mounted, could cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2018-10877)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly keep meta-data information consistent in some
situations. An attacker could use this to construct a malicious ext4 image
that, when mounted, could cause a denial of service (system crash).
(CVE-2018-10881)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly handle corrupted meta data in some situations. An
attacker could use this to specially craft an ext4 file system that caused
a denial of service (system crash) when mounted. (CVE-2018-1092)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly handle corrupted meta data in some situations. An
attacker could use this to specially craft an ext4 filesystem that caused a
denial of service (system crash) when mounted. (CVE-2018-1093)

It was discovered that the cdrom driver in the Linux kernel contained an
incorrect bounds check. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-10940)

Shankara Pailoor discovered that the JFS filesystem implementation in the
Linux kernel contained a buffer overflow when handling extended attributes.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2018-12233)

Wen Xu discovered that the XFS filesystem implementation in the Linux
kernel did not properly handle an error condition with a corrupted xfs
image. An attacker could use this to construct a malicious xfs image that,
when mounted, could cause a denial of service (system crash).
(CVE-2018-13094)

It was discovered that the Linux kernel did not properly handle setgid file
creation when performed by a non-member of the group. A local attacker
could use this to gain elevated privileges. (CVE-2018-13405)

Silvio Cesare discovered that the generic VESA frame buffer driver in the
Linux kernel contained an integer overflow. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-13406)

Daniel Jiang discovered that a race condition existed in the ipv4 ping
socket implementation in the Linux kernel. A local privileged attacker
could use this to cause a denial of service (system crash). (CVE-2017-2671)

It was discovered that an information leak existed in the generic SCSI
driver in the Linux kernel. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-1000204)

It was discovered that a memory leak existed in the Serial Attached SCSI
(SAS) implementation in the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (memory exhaustion).
(CVE-2018-10021)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-157-generic 3.13.0-157.207
linux-image-3.13.0-157-generic-lpae 3.13.0-157.207
linux-image-3.13.0-157-lowlatency 3.13.0-157.207
linux-image-3.13.0-157-powerpc-e500 3.13.0-157.207
linux-image-3.13.0-157-powerpc-e500mc 3.13.0-157.207
linux-image-3.13.0-157-powerpc-smp 3.13.0-157.207
linux-image-3.13.0-157-powerpc64-emb 3.13.0-157.207
linux-image-3.13.0-157-powerpc64-smp 3.13.0-157.207
linux-image-generic 3.13.0.157.167
linux-image-generic-lpae 3.13.0.157.167
linux-image-lowlatency 3.13.0.157.167
linux-image-powerpc-e500 3.13.0.157.167
linux-image-powerpc-e500mc 3.13.0.157.167
linux-image-powerpc-smp 3.13.0.157.167
linux-image-powerpc64-emb 3.13.0.157.167
linux-image-powerpc64-smp 3.13.0.157.167

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-3754-1
CVE-2016-10208, CVE-2017-11472, CVE-2017-11473, CVE-2017-14991,
CVE-2017-15649, CVE-2017-16526, CVE-2017-16527, CVE-2017-16529,
CVE-2017-16531, CVE-2017-16532, CVE-2017-16533, CVE-2017-16535,
CVE-2017-16536, CVE-2017-16537, CVE-2017-16538, CVE-2017-16643,
CVE-2017-16644, CVE-2017-16645, CVE-2017-16650, CVE-2017-16911,
CVE-2017-16912, CVE-2017-16913, CVE-2017-16914, CVE-2017-17558,
CVE-2017-18255, CVE-2017-18270, CVE-2017-2583, CVE-2017-2584,
CVE-2017-2671, CVE-2017-5549, CVE-2017-5897, CVE-2017-6345,
CVE-2017-6348, CVE-2017-7518, CVE-2017-7645, CVE-2017-8831,
CVE-2017-9984, CVE-2017-9985, CVE-2018-1000204, CVE-2018-10021,
CVE-2018-10087, CVE-2018-10124, CVE-2018-10323, CVE-2018-10675,
CVE-2018-10877, CVE-2018-10881, CVE-2018-1092, CVE-2018-1093,
CVE-2018-10940, CVE-2018-12233, CVE-2018-13094, CVE-2018-13405,
CVE-2018-13406

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-157.207