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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2017.2150.2
Linux kernel vulnerability
30 August 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-11176 CVE-2017-7616 CVE-2017-7541
CVE-2017-7495 CVE-2017-7487 CVE-2017-7273
CVE-2017-7261 CVE-2016-7914 CVE-2015-7837
Reference: ESB-2017.2075
ESB-2017.1958
ESB-2017.1890
ESB-2017.1872
ESB-2017.1808
ASB-2016.0103
Original Bulletin:
https://www.ubuntu.com/usn/usn-3404-1
https://www.ubuntu.com/usn/usn-3404-2
https://www.ubuntu.com/usn/usn-3405-1
https://www.ubuntu.com/usn/usn-3405-2
https://www.ubuntu.com/usn/usn-3406-1
https://www.ubuntu.com/usn/usn-3406-2
Comment: This bulletin contains six (6) Ubuntu security advisories.
Revision History: August 30 2017: Added update usn-3406-2 which provides
the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu
14.04 LTS for Ubuntu 12.04 ESM.
August 29 2017: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
==========================================================================
Ubuntu Security Notice USN-3404-1
August 28, 2017
linux, linux-raspi2 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.04
Summary:
The system could be made to crash under certain conditions.
Software Description:
- - linux: Linux kernel
- - linux-raspi2: Linux kernel for Raspberry Pi 2
Details:
A reference count bug was discovered in the Linux kernel ipx protocol
stack. A local attacker could exploit this flaw to cause a denial of
service or possibly other unspecified problems.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
linux-image-4.10.0-1016-raspi2 4.10.0-1016.19
linux-image-4.10.0-33-generic 4.10.0-33.37
linux-image-4.10.0-33-generic-lpae 4.10.0-33.37
linux-image-4.10.0-33-lowlatency 4.10.0-33.37
linux-image-generic 4.10.0.33.33
linux-image-generic-lpae 4.10.0.33.33
linux-image-lowlatency 4.10.0.33.33
linux-image-raspi2 4.10.0.1016.17
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://www.ubuntu.com/usn/usn-3404-1
CVE-2017-7487
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.10.0-33.37
https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1016.19
==========================================================================
Ubuntu Security Notice USN-3404-2
August 28, 2017
linux-hwe vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.04 LTS
Summary:
The system could be made to crash under certain conditions.
Software Description:
- - linux-hwe: Linux hardware enablement (HWE) kernel
Details:
USN-3404-1 fixed a vulnerability in the Linux kernel for Ubuntu 17.04.
This update provides the corresponding updates for the Linux Hardware
Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS.
A reference count bug was discovered in the Linux kernel ipx protocol
stack. A local attacker could exploit this flaw to cause a denial of
service or possibly other unspecified problems.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
linux-image-4.10.0-33-generic 4.10.0-33.37~16.04.1
linux-image-4.10.0-33-generic-lpae 4.10.0-33.37~16.04.1
linux-image-4.10.0-33-lowlatency 4.10.0-33.37~16.04.1
linux-image-generic-hwe-16.04 4.10.0.33.35
linux-image-generic-lpae-hwe-16.04 4.10.0.33.35
linux-image-lowlatency-hwe-16.04 4.10.0.33.35
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://www.ubuntu.com/usn/usn-3404-2
https://www.ubuntu.com/usn/usn-3404-1
CVE-2017-7487
Package Information:
https://launchpad.net/ubuntu/+source/linux-hwe/4.10.0-33.37~16.04.1
==========================================================================
Ubuntu Security Notice USN-3405-1
August 28, 2017
linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- - linux: Linux kernel
- - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- - linux-gke: Linux kernel for Google Container Engine (GKE) systems
- - linux-raspi2: Linux kernel for Raspberry Pi 2
- - linux-snapdragon: Linux kernel for Snapdragon processors
Details:
It was discovered that a use-after-free vulnerability existed in the POSIX
message queue 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-2017-11176)
Huang Weller discovered that the ext4 filesystem implementation in the
Linux kernel mishandled a needs-flushing-before-commit list. A local
attacker could use this to expose sensitive information. (CVE-2017-7495)
It was discovered that a buffer overflow existed in the Broadcom FullMAC
WLAN 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-2017-7541)
It was discovered that the Linux kernel did not honor the UEFI secure boot
mode when performing a kexec operation. A local attacker could use this to
bypass secure boot restrictions. (CVE-2015-7837)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
linux-image-4.4.0-1028-gke 4.4.0-1028.28
linux-image-4.4.0-1032-aws 4.4.0-1032.41
linux-image-4.4.0-1071-raspi2 4.4.0-1071.79
linux-image-4.4.0-1073-snapdragon 4.4.0-1073.78
linux-image-4.4.0-93-generic 4.4.0-93.116
linux-image-4.4.0-93-generic-lpae 4.4.0-93.116
linux-image-4.4.0-93-lowlatency 4.4.0-93.116
linux-image-4.4.0-93-powerpc-e500mc 4.4.0-93.116
linux-image-4.4.0-93-powerpc-smp 4.4.0-93.116
linux-image-4.4.0-93-powerpc64-emb 4.4.0-93.116
linux-image-4.4.0-93-powerpc64-smp 4.4.0-93.116
linux-image-aws 4.4.0.1032.34
linux-image-generic 4.4.0.93.98
linux-image-generic-lpae 4.4.0.93.98
linux-image-gke 4.4.0.1028.29
linux-image-lowlatency 4.4.0.93.98
linux-image-powerpc-smp 4.4.0.93.98
linux-image-powerpc64-emb 4.4.0.93.98
linux-image-powerpc64-smp 4.4.0.93.98
linux-image-raspi2 4.4.0.1071.71
linux-image-snapdragon 4.4.0.1073.65
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://www.ubuntu.com/usn/usn-3405-1
CVE-2015-7837, CVE-2017-11176, CVE-2017-7495, CVE-2017-7541
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-93.116
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1032.41
https://launchpad.net/ubuntu/+source/linux-gke/4.4.0-1028.28
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1071.79
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1073.78
==========================================================================
Ubuntu Security Notice USN-3405-2
August 28, 2017
linux-lts-xenial vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
Details:
USN-3405-1 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 use-after-free vulnerability existed in the POSIX
message queue 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-2017-11176)
Huang Weller discovered that the ext4 filesystem implementation in the
Linux kernel mishandled a needs-flushing-before-commit list. A local
attacker could use this to expose sensitive information. (CVE-2017-7495)
It was discovered that a buffer overflow existed in the Broadcom FullMAC
WLAN 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-2017-7541)
It was discovered that the Linux kernel did not honor the UEFI secure boot
mode when performing a kexec operation. A local attacker could use this to
bypass secure boot restrictions. (CVE-2015-7837)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-4.4.0-93-generic 4.4.0-93.116~14.04.1
linux-image-4.4.0-93-generic-lpae 4.4.0-93.116~14.04.1
linux-image-4.4.0-93-lowlatency 4.4.0-93.116~14.04.1
linux-image-4.4.0-93-powerpc-e500mc 4.4.0-93.116~14.04.1
linux-image-4.4.0-93-powerpc-smp 4.4.0-93.116~14.04.1
linux-image-4.4.0-93-powerpc64-emb 4.4.0-93.116~14.04.1
linux-image-4.4.0-93-powerpc64-smp 4.4.0-93.116~14.04.1
linux-image-generic-lpae-lts-xenial 4.4.0.93.77
linux-image-generic-lts-xenial 4.4.0.93.77
linux-image-lowlatency-lts-xenial 4.4.0.93.77
linux-image-powerpc-e500mc-lts-xenial 4.4.0.93.77
linux-image-powerpc-smp-lts-xenial 4.4.0.93.77
linux-image-powerpc64-emb-lts-xenial 4.4.0.93.77
linux-image-powerpc64-smp-lts-xenial 4.4.0.93.77
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://www.ubuntu.com/usn/usn-3405-2
https://www.ubuntu.com/usn/usn-3405-1
CVE-2015-7837, CVE-2017-11176, CVE-2017-7495, CVE-2017-7541
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-93.116~14.04.1
==========================================================================
Ubuntu Security Notice USN-3406-1
August 28, 2017
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 an out of bounds read vulnerability existed in the
associative array implementation in the Linux kernel. A local attacker
could use this to cause a denial of service (system crash) or expose
sensitive information. (CVE-2016-7914)
It was discovered that a NULL pointer dereference existed in the Direct
Rendering Manager (DRM) driver for VMWare devices in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2017-7261)
It was discovered that the USB Cypress HID drivers for the Linux kernel did
not properly validate reported information from the device. An attacker
with physical access could use this to expose sensitive information (kernel
memory). (CVE-2017-7273)
A reference count bug was discovered in the Linux kernel ipx protocol
stack. A local attacker could exploit this flaw to cause a denial of
service or possibly other unspecified problems. (CVE-2017-7487)
Huang Weller discovered that the ext4 filesystem implementation in the
Linux kernel mishandled a needs-flushing-before-commit list. A local
attacker could use this to expose sensitive information. (CVE-2017-7495)
It was discovered that an information leak existed in the set_mempolicy and
mbind compat syscalls in the Linux kernel. A local attacker could use this
to expose sensitive information (kernel memory). (CVE-2017-7616)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-3.13.0-129-generic 3.13.0-129.178
linux-image-3.13.0-129-generic-lpae 3.13.0-129.178
linux-image-3.13.0-129-lowlatency 3.13.0-129.178
linux-image-3.13.0-129-powerpc-e500 3.13.0-129.178
linux-image-3.13.0-129-powerpc-e500mc 3.13.0-129.178
linux-image-3.13.0-129-powerpc-smp 3.13.0-129.178
linux-image-3.13.0-129-powerpc64-emb 3.13.0-129.178
linux-image-3.13.0-129-powerpc64-smp 3.13.0-129.178
linux-image-generic 3.13.0.129.138
linux-image-generic-lpae 3.13.0.129.138
linux-image-lowlatency 3.13.0.129.138
linux-image-powerpc-e500 3.13.0.129.138
linux-image-powerpc-e500mc 3.13.0.129.138
linux-image-powerpc-smp 3.13.0.129.138
linux-image-powerpc64-emb 3.13.0.129.138
linux-image-powerpc64-smp 3.13.0.129.138
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://www.ubuntu.com/usn/usn-3406-1
CVE-2016-7914, CVE-2017-7261, CVE-2017-7273, CVE-2017-7487,
CVE-2017-7495, CVE-2017-7616
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-129.178
==========================================================================
Ubuntu Security Notice USN-3406-2
August 29, 2017
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-3406-1 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 an out of bounds read vulnerability existed in the
associative array implementation in the Linux kernel. A local attacker
could use this to cause a denial of service (system crash) or expose
sensitive information. (CVE-2016-7914)
It was discovered that a NULL pointer dereference existed in the Direct
Rendering Manager (DRM) driver for VMWare devices in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2017-7261)
It was discovered that the USB Cypress HID drivers for the Linux kernel did
not properly validate reported information from the device. An attacker
with physical access could use this to expose sensitive information (kernel
memory). (CVE-2017-7273)
A reference count bug was discovered in the Linux kernel ipx protocol
stack. A local attacker could exploit this flaw to cause a denial of
service or possibly other unspecified problems. (CVE-2017-7487)
Huang Weller discovered that the ext4 filesystem implementation in the
Linux kernel mishandled a needs-flushing-before-commit list. A local
attacker could use this to expose sensitive information. (CVE-2017-7495)
It was discovered that an information leak existed in the set_mempolicy and
mbind compat syscalls in the Linux kernel. A local attacker could use this
to expose sensitive information (kernel memory). (CVE-2017-7616)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
linux-image-3.13.0-129-generic 3.13.0-129.178~precise1
linux-image-3.13.0-129-generic-lpae 3.13.0-129.178~precise1
linux-image-generic-lpae-lts-trusty 3.13.0.129.119
linux-image-generic-lts-trusty 3.13.0.129.119
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
https://www.ubuntu.com/usn/usn-3406-2
https://www.ubuntu.com/usn/usn-3406-1
CVE-2016-7914, CVE-2017-7261, CVE-2017-7273, CVE-2017-7487,
CVE-2017-7495, CVE-2017-7616
- --------------------------END INCLUDED TEXT--------------------
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