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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2018.1921
Linux kernel vulnerabilities patched in Ubuntu 14.04 LTS and 16.04 LTS
3 July 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: linux
linux-aws
linux-kvm
linux-raspi2
linux-snapdragon
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Access Privileged Data -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-1000204 CVE-2018-10124 CVE-2018-10087
CVE-2018-10021 CVE-2018-7755 CVE-2018-5814
CVE-2018-3665 CVE-2017-18257 CVE-2017-18255
CVE-2017-13695
Reference: ESB-2018.1917
ESB-2018.1916
ESB-2018.1831
ESB-2018.1770
Original Bulletin:
http://www.ubuntu.com/usn/usn-3696-1
http://www.ubuntu.com/usn/usn-3696-2
Comment: This bulletin contains two (2) Ubuntu security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
==========================================================================
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
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- --------------------------------------------------------------------------------
==========================================================================
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
- --------------------------END INCLUDED TEXT--------------------
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===========================================================================
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===========================================================================
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