The following kernel updates has been released for Ubuntu Linux:

USN-3695-1: Linux kernel vulnerabilities
USN-3695-2: Linux kernel (HWE) vulnerabilities
USN-3696-1: Linux kernel vulnerabilities
USN-3696-2: Linux kernel (Xenial HWE) vulnerabilities
USN-3697-1: Linux kernel vulnerabilities
USN-3697-2: Linux kernel (OEM) vulnerabilities
USN-3698-1: Linux kernel vulnerabilities
USN-3698-2: Linux kernel (Trusty HWE) vulnerabilities

USN-3695-1: Linux kernel vulnerabilities

=========================================================================Ubuntu Security Notice USN-3695-1
July 02, 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:

Wen Xu discovered that the ext4 file system implementation in the Linux
kernel did not properly initialize the crc32c checksum driver. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2018-1094)

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)

Wen Xu discovered that the ext4 file system implementation in the Linux
kernel did not properly validate xattr sizes. A local attacker could use
this to cause a denial of service (system crash). (CVE-2018-1095)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation for
64 bit Linux kernels did not properly initialize memory returned to user
space in some situations. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-11508)

It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

Update instructions:

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

Ubuntu 18.04 LTS:
linux-image-4.15.0-1010-gcp 4.15.0-1010.10
linux-image-4.15.0-1011-aws 4.15.0-1011.11
linux-image-4.15.0-1012-kvm 4.15.0-1012.12
linux-image-4.15.0-1013-raspi2 4.15.0-1013.14
linux-image-4.15.0-1014-azure 4.15.0-1014.14
linux-image-4.15.0-24-generic 4.15.0-24.26
linux-image-4.15.0-24-generic-lpae 4.15.0-24.26
linux-image-4.15.0-24-lowlatency 4.15.0-24.26
linux-image-4.15.0-24-snapdragon 4.15.0-24.26
linux-image-aws 4.15.0.1011.11
linux-image-azure 4.15.0.1014.14
linux-image-gcp 4.15.0.1010.12
linux-image-generic 4.15.0.24.26
linux-image-generic-lpae 4.15.0.24.26
linux-image-gke 4.15.0.1010.12
linux-image-kvm 4.15.0.1012.12
linux-image-lowlatency 4.15.0.24.26
linux-image-oem 4.15.0.1009.11
linux-image-raspi2 4.15.0.1013.11
linux-image-snapdragon 4.15.0.24.26

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-3695-1
CVE-2018-1094, CVE-2018-10940, CVE-2018-1095, CVE-2018-11508,
CVE-2018-7755

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-24.26
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1011.11
https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1014.14
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1010.10
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1012.12
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1009.12
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1013.14

USN-3695-2: Linux kernel (HWE) vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3695-2
July 02, 2018

linux-hwe, linux-azure 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-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-3695-1 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.

Wen Xu discovered that the ext4 file system implementation in the Linux
kernel did not properly initialize the crc32c checksum driver. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2018-1094)

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)

Wen Xu discovered that the ext4 file system implementation in the Linux
kernel did not properly validate xattr sizes. A local attacker could use
this to cause a denial of service (system crash). (CVE-2018-1095)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation for
64 bit Linux kernels did not properly initialize memory returned to user
space in some situations. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-11508)

It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.15.0-1014-azure 4.15.0-1014.14~16.04.1
linux-image-4.15.0-24-generic 4.15.0-24.26~16.04.1
linux-image-4.15.0-24-generic-lpae 4.15.0-24.26~16.04.1
linux-image-4.15.0-24-lowlatency 4.15.0-24.26~16.04.1
linux-image-azure 4.15.0.1014.21
linux-image-generic-hwe-16.04 4.15.0.24.46
linux-image-generic-lpae-hwe-16.04 4.15.0.24.46
linux-image-lowlatency-hwe-16.04 4.15.0.24.46

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-3695-2
https://usn.ubuntu.com/usn/usn-3695-1
CVE-2018-1094, CVE-2018-10940, CVE-2018-1095, CVE-2018-11508,
CVE-2018-7755

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1014.14~16.04.1
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-24.26~16.04.1

USN-3696-1: Linux kernel vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3696-1
July 02, 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 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)

Wei Fang discovered an integer overflow in the F2FS filesystem
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service. (CVE-2017-18257)

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 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)

Julian Stecklina and Thomas Prescher discovered that FPU register states
(such as MMX, SSE, and AVX registers) which are lazily restored are
potentially vulnerable to a side channel attack. A local attacker could use
this to expose sensitive information. (CVE-2018-3665)

Jakub Jirasek discovered that multiple use-after-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 an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

Seunghun Han discovered an information leak in the ACPI handling code in
the Linux kernel when handling early termination of ACPI table loading. A
local attacker could use this to expose sensitive informal (kernel address
locations). (CVE-2017-13695)

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 16.04 LTS:
linux-image-4.4.0-1029-kvm 4.4.0-1029.34
linux-image-4.4.0-1062-aws 4.4.0-1062.71
linux-image-4.4.0-1092-raspi2 4.4.0-1092.100
linux-image-4.4.0-1095-snapdragon 4.4.0-1095.100
linux-image-4.4.0-130-generic 4.4.0-130.156
linux-image-4.4.0-130-generic-lpae 4.4.0-130.156
linux-image-4.4.0-130-lowlatency 4.4.0-130.156
linux-image-4.4.0-130-powerpc-e500mc 4.4.0-130.156
linux-image-4.4.0-130-powerpc-smp 4.4.0-130.156
linux-image-4.4.0-130-powerpc64-emb 4.4.0-130.156
linux-image-4.4.0-130-powerpc64-smp 4.4.0-130.156
linux-image-aws 4.4.0.1062.64
linux-image-generic 4.4.0.130.136
linux-image-generic-lpae 4.4.0.130.136
linux-image-kvm 4.4.0.1029.28
linux-image-lowlatency 4.4.0.130.136
linux-image-powerpc-e500mc 4.4.0.130.136
linux-image-powerpc-smp 4.4.0.130.136
linux-image-powerpc64-emb 4.4.0.130.136
linux-image-powerpc64-smp 4.4.0.130.136
linux-image-raspi2 4.4.0.1092.92
linux-image-snapdragon 4.4.0.1095.87

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-3696-1
CVE-2017-13695, CVE-2017-18255, CVE-2017-18257, CVE-2018-1000204,
CVE-2018-10021, CVE-2018-10087, CVE-2018-10124, CVE-2018-3665,
CVE-2018-5814, CVE-2018-7755

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-130.156
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1062.71
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1029.34
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1092.100
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1095.100

USN-3696-2: Linux kernel (Xenial HWE) vulnerabilities

=========================================================================Ubuntu Security Notice USN-3696-2
July 02, 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-3696-1 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 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)

Wei Fang discovered an integer overflow in the F2FS filesystem
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service. (CVE-2017-18257)

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 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)

Julian Stecklina and Thomas Prescher discovered that FPU register states
(such as MMX, SSE, and AVX registers) which are lazily restored are
potentially vulnerable to a side channel attack. A local attacker could use
this to expose sensitive information. (CVE-2018-3665)

Jakub Jirasek discovered that multiple use-after-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 an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

Seunghun Han discovered an information leak in the ACPI handling code in
the Linux kernel when handling early termination of ACPI table loading. A
local attacker could use this to expose sensitive informal (kernel address
locations). (CVE-2017-13695)

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-4.4.0-1024-aws 4.4.0-1024.25
linux-image-4.4.0-130-generic 4.4.0-130.156~14.04.1
linux-image-4.4.0-130-generic-lpae 4.4.0-130.156~14.04.1
linux-image-4.4.0-130-lowlatency 4.4.0-130.156~14.04.1
linux-image-4.4.0-130-powerpc-e500mc 4.4.0-130.156~14.04.1
linux-image-4.4.0-130-powerpc-smp 4.4.0-130.156~14.04.1
linux-image-4.4.0-130-powerpc64-emb 4.4.0-130.156~14.04.1
linux-image-4.4.0-130-powerpc64-smp 4.4.0-130.156~14.04.1
linux-image-aws 4.4.0.1024.24
linux-image-generic-lpae-lts-xenial 4.4.0.130.110
linux-image-generic-lts-xenial 4.4.0.130.110
linux-image-lowlatency-lts-xenial 4.4.0.130.110
linux-image-powerpc-e500mc-lts-xenial 4.4.0.130.110
linux-image-powerpc-smp-lts-xenial 4.4.0.130.110
linux-image-powerpc64-emb-lts-xenial 4.4.0.130.110
linux-image-powerpc64-smp-lts-xenial 4.4.0.130.110

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-3696-2
https://usn.ubuntu.com/usn/usn-3696-1
CVE-2017-13695, CVE-2017-18255, CVE-2017-18257, CVE-2018-1000204,
CVE-2018-10021, CVE-2018-10087, CVE-2018-10124, CVE-2018-3665,
CVE-2018-5814, CVE-2018-7755

Package Information:
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1024.25
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-130.156~14.04.1

USN-3697-1: Linux kernel vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3697-1
July 02, 2018

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

- Ubuntu 17.10

Summary:

Several security issues were fixed in the Linux kernel.

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

Details:

It was discovered that a null pointer dereference vulnerability existed in
the DCCP protocol implementation in the Linux kernel. A local attacker
could use this to cause a denial of service (system crash). (CVE-2018-1130)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation for
64 bit Linux kernels did not properly initialize memory returned to user
space in some situations. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-11508)

Wang Qize discovered that an information disclosure vulnerability existed
in the SMBus driver for ACPI Embedded Controllers in the Linux kernel. A
local attacker could use this to expose sensitive information (kernel
pointer addresses). (CVE-2018-5750)

It was discovered that the SCTP Protocol implementation in the Linux kernel
did not properly validate userspace provided payload lengths in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2018-5803)

It was discovered that an integer overflow error existed in the futex
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2018-6927)

It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

It was discovered that a memory leak existed in the SAS driver subsystem of
the Linux kernel. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2018-7757)

Update instructions:

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

Ubuntu 17.10:
linux-image-4.13.0-1023-raspi2 4.13.0-1023.24
linux-image-4.13.0-46-generic 4.13.0-46.51
linux-image-4.13.0-46-generic-lpae 4.13.0-46.51
linux-image-4.13.0-46-lowlatency 4.13.0-46.51
linux-image-generic 4.13.0.46.49
linux-image-generic-lpae 4.13.0.46.49
linux-image-lowlatency 4.13.0.46.49
linux-image-raspi2 4.13.0.1023.21

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-3697-1
CVE-2018-1130, CVE-2018-11508, CVE-2018-5750, CVE-2018-5803,
CVE-2018-6927, CVE-2018-7755, CVE-2018-7757

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.13.0-46.51
https://launchpad.net/ubuntu/+source/linux-raspi2/4.13.0-1023.24

USN-3697-2: Linux kernel (OEM) vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3697-2
July 02, 2018

linux-oem 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-oem: Linux kernel for OEM processors

Details:

It was discovered that a null pointer dereference vulnerability existed in
the DCCP protocol implementation in the Linux kernel. A local attacker
could use this to cause a denial of service (system crash). (CVE-2018-1130)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation for
64 bit Linux kernels did not properly initialize memory returned to user
space in some situations. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-11508)

Wang Qize discovered that an information disclosure vulnerability existed
in the SMBus driver for ACPI Embedded Controllers in the Linux kernel. A
local attacker could use this to expose sensitive information (kernel
pointer addresses). (CVE-2018-5750)

It was discovered that the SCTP Protocol implementation in the Linux kernel
did not properly validate userspace provided payload lengths in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2018-5803)

It was discovered that an integer overflow error existed in the futex
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2018-6927)

It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

It was discovered that a memory leak existed in the SAS driver subsystem of
the Linux kernel. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2018-7757)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.13.0-1031-oem 4.13.0-1031.35
linux-image-oem 4.13.0.1031.36

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-3697-2
https://usn.ubuntu.com/usn/usn-3697-1
CVE-2018-1130, CVE-2018-11508, CVE-2018-5750, CVE-2018-5803,
CVE-2018-6927, CVE-2018-7755, CVE-2018-7757

Package Information:
https://launchpad.net/ubuntu/+source/linux-oem/4.13.0-1031.35

USN-3698-1: Linux kernel vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3698-1
July 02, 2018

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel

Details:

It was discovered that the nested KVM implementation in the Linux kernel in
some situations did not properly prevent second level guests from reading
and writing the hardware CR8 register. A local attacker in a guest could
use this to cause a denial of service (system crash). (CVE-2017-12154)

Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array
implementation in the Linux kernel sometimes did not properly handle adding
a new entry. A local attacker could use this to cause a denial of service
(system crash). (CVE-2017-12193)

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)

It was discovered that a null pointer dereference vulnerability existed in
the DCCP protocol implementation in the Linux kernel. A local attacker
could use this to cause a denial of service (system crash). (CVE-2018-1130)

Julian Stecklina and Thomas Prescher discovered that FPU register states
(such as MMX, SSE, and AVX registers) which are lazily restored are
potentially vulnerable to a side channel attack. A local attacker could use
this to expose sensitive information. (CVE-2018-3665)

Wang Qize discovered that an information disclosure vulnerability existed
in the SMBus driver for ACPI Embedded Controllers in the Linux kernel. A
local attacker could use this to expose sensitive information (kernel
pointer addresses). (CVE-2018-5750)

It was discovered that the SCTP Protocol implementation in the Linux kernel
did not properly validate userspace provided payload lengths in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2018-5803)

It was discovered that an integer overflow error existed in the futex
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2018-6927)

It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

It was discovered that a memory leak existed in the SAS driver subsystem of
the Linux kernel. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2018-7757)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-153-generic 3.13.0-153.203
linux-image-3.13.0-153-generic-lpae 3.13.0-153.203
linux-image-3.13.0-153-lowlatency 3.13.0-153.203
linux-image-3.13.0-153-powerpc-e500 3.13.0-153.203
linux-image-3.13.0-153-powerpc-e500mc 3.13.0-153.203
linux-image-3.13.0-153-powerpc-smp 3.13.0-153.203
linux-image-3.13.0-153-powerpc64-emb 3.13.0-153.203
linux-image-3.13.0-153-powerpc64-smp 3.13.0-153.203
linux-image-generic 3.13.0.153.163
linux-image-generic-lpae 3.13.0.153.163
linux-image-lowlatency 3.13.0.153.163
linux-image-powerpc-e500 3.13.0.153.163
linux-image-powerpc-e500mc 3.13.0.153.163
linux-image-powerpc-smp 3.13.0.153.163
linux-image-powerpc64-emb 3.13.0.153.163
linux-image-powerpc64-smp 3.13.0.153.163

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-3698-1
CVE-2017-12154, CVE-2017-12193, CVE-2017-15265, CVE-2018-1130,
CVE-2018-3665, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927,
CVE-2018-7755, CVE-2018-7757

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-153.203

USN-3698-2: Linux kernel (Trusty HWE) vulnerabilities

=========================================================================
Ubuntu Security Notice USN-3698-2
July 02, 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-3698-1 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 the nested KVM implementation in the Linux kernel in
some situations did not properly prevent second level guests from reading
and writing the hardware CR8 register. A local attacker in a guest could
use this to cause a denial of service (system crash). (CVE-2017-12154)

Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array
implementation in the Linux kernel sometimes did not properly handle adding
a new entry. A local attacker could use this to cause a denial of service
(system crash). (CVE-2017-12193)

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)

It was discovered that a null pointer dereference vulnerability existed in
the DCCP protocol implementation in the Linux kernel. A local attacker
could use this to cause a denial of service (system crash). (CVE-2018-1130)

Julian Stecklina and Thomas Prescher discovered that FPU register states
(such as MMX, SSE, and AVX registers) which are lazily restored are
potentially vulnerable to a side channel attack. A local attacker could use
this to expose sensitive information. (CVE-2018-3665)

Wang Qize discovered that an information disclosure vulnerability existed
in the SMBus driver for ACPI Embedded Controllers in the Linux kernel. A
local attacker could use this to expose sensitive information (kernel
pointer addresses). (CVE-2018-5750)

It was discovered that the SCTP Protocol implementation in the Linux kernel
did not properly validate userspace provided payload lengths in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2018-5803)

It was discovered that an integer overflow error existed in the futex
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2018-6927)

It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

It was discovered that a memory leak existed in the SAS driver subsystem of
the Linux kernel. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2018-7757)

Update instructions:

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

Ubuntu 12.04 ESM:
linux-image-3.13.0-153-generic 3.13.0-153.203~precise1
linux-image-3.13.0-153-generic-lpae 3.13.0-153.203~precise1
linux-image-generic-lpae-lts-trusty 3.13.0.153.143
linux-image-generic-lts-trusty 3.13.0.153.143

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-3698-2
https://usn.ubuntu.com/usn/usn-3698-1
CVE-2017-12154, CVE-2017-12193, CVE-2017-15265, CVE-2018-1130,
CVE-2018-3665, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927,
CVE-2018-7755, CVE-2018-7757