Sigurnosni nedostaci jezgre operacijskog sustava

==========================================================================
Ubuntu Security Notice USN-4161-1
October 21, 2019

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

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

– Ubuntu 19.10

Summary:

The system could be made to crash under certain conditions.

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

Details:

It was discovered that the IPv6 routing implementation in the Linux kernel
contained a reference counting error leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 19.10:
linux-image-5.3.0-1004-aws 5.3.0-1004.4
linux-image-5.3.0-1004-azure 5.3.0-1004.4
linux-image-5.3.0-1004-kvm 5.3.0-1004.4
linux-image-5.3.0-1005-gcp 5.3.0-1005.5
linux-image-5.3.0-1008-raspi2 5.3.0-1008.9
linux-image-5.3.0-19-generic 5.3.0-19.20
linux-image-5.3.0-19-generic-lpae 5.3.0-19.20
linux-image-5.3.0-19-lowlatency 5.3.0-19.20
linux-image-5.3.0-19-snapdragon 5.3.0-19.20
linux-image-aws 5.3.0.1004.5
linux-image-azure 5.3.0.1004.21
linux-image-gcp 5.3.0.1005.5
linux-image-generic 5.3.0.19.22
linux-image-generic-lpae 5.3.0.19.22
linux-image-gke 5.3.0.1005.5
linux-image-kvm 5.3.0.1004.4
linux-image-lowlatency 5.3.0.19.22
linux-image-raspi2 5.3.0.1008.4
linux-image-snapdragon 5.3.0.19.22
linux-image-virtual 5.3.0.19.22

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/4161-1
CVE-2019-18198

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.3.0-19.20
https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1004.4
https://launchpad.net/ubuntu/+source/linux-azure/5.3.0-1004.4
https://launchpad.net/ubuntu/+source/linux-gcp/5.3.0-1005.5
https://launchpad.net/ubuntu/+source/linux-kvm/5.3.0-1004.4
https://launchpad.net/ubuntu/+source/linux-raspi2/5.3.0-1008.9

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==========================================================================
Ubuntu Security Notice USN-4157-2
October 22, 2019

linux-hwe, linux-azure, linux-gcp, linux-gke-5.0 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-azure: Linux kernel for Microsoft Azure Cloud systems
– linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
– linux-gke-5.0: Linux kernel for Google Container Engine (GKE) systems
– linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-4157-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.04.
This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 19.04 for Ubuntu
18.04 LTS.

Wen Huang discovered that the Marvell Wi-Fi device driver in the Linux
kernel did not properly perform bounds checking, leading to a heap
overflow. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-14814,
CVE-2019-14815, CVE-2019-14816)

Matt Delco discovered that the KVM hypervisor implementation in the Linux
kernel did not properly perform bounds checking when handling coalesced
MMIO write operations. A local attacker with write access to /dev/kvm could
use this to cause a denial of service (system crash). (CVE-2019-14821)

Hui Peng and Mathias Payer discovered that the 91x Wi-Fi driver in the
Linux kernel did not properly handle error conditions on initialization,
leading to a double-free vulnerability. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2019-15504)

It was discovered that the Technisat DVB-S/S2 USB device driver in the
Linux kernel contained a buffer overread. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
expose sensitive information. (CVE-2019-15505)

Brad Spengler discovered that a Spectre mitigation was improperly
implemented in the ptrace susbsystem of the Linux kernel. A local attacker
could possibly use this to expose sensitive information. (CVE-2019-15902)

It was discovered that the IPv6 RDS implementation in the Linux kernel did
not properly initialize fields in a data structure returned to user space.
A local attacker could use this to expose sensitive information (kernel
memory). Please note that the RDS protocol is blacklisted in Ubuntu by
default. (CVE-2019-16714)

It was discovered that an integer overflow existed in the Binder
implementation of the Linux kernel, leading to a buffer overflow. A local
attacker could use this to escalate privileges. (CVE-2019-2181)

Update instructions:

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

Ubuntu 18.04 LTS:
linux-image-5.0.0-1021-gcp 5.0.0-1021.21~18.04.1
linux-image-5.0.0-1023-azure 5.0.0-1023.24~18.04.1
linux-image-5.0.0-1023-gke 5.0.0-1023.23~18.04.2
linux-image-5.0.0-32-generic 5.0.0-32.34~18.04.2
linux-image-5.0.0-32-generic-lpae 5.0.0-32.34~18.04.2
linux-image-5.0.0-32-lowlatency 5.0.0-32.34~18.04.2
linux-image-azure 5.0.0.1023.33
linux-image-gcp 5.0.0.1021.26
linux-image-generic-hwe-18.04 5.0.0.32.89
linux-image-generic-lpae-hwe-18.04 5.0.0.32.89
linux-image-gke-5.0 5.0.0.1023.12
linux-image-lowlatency-hwe-18.04 5.0.0.32.89
linux-image-snapdragon-hwe-18.04 5.0.0.32.89
linux-image-virtual-hwe-18.04 5.0.0.32.89

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4157-2
https://usn.ubuntu.com/4157-1
CVE-2019-14814, CVE-2019-14815, CVE-2019-14816, CVE-2019-14821,
CVE-2019-15504, CVE-2019-15505, CVE-2019-15902, CVE-2019-16714,
CVE-2019-2181

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/5.0.0-1023.24~18.04.1
https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1021.21~18.04.1
https://launchpad.net/ubuntu/+source/linux-gke-5.0/5.0.0-1023.23~18.04.2
https://launchpad.net/ubuntu/+source/linux-hwe/5.0.0-32.34~18.04.2

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==========================================================================
Ubuntu Security Notice USN-4162-1
October 22, 2019

linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15,
linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2,
linux-snapdragon vulnerabilities
==========================================================================

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

– Ubuntu 18.04 LTS
– 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-4.15: Linux kernel for Google Container Engine (GKE) systems
– linux-kvm: Linux kernel for cloud environments
– linux-oem: Linux kernel for OEM processors
– linux-oracle: Linux kernel for Oracle Cloud systems
– linux-raspi2: Linux kernel for Raspberry Pi 2
– linux-snapdragon: Linux kernel for Snapdragon processors
– linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
– linux-azure: Linux kernel for Microsoft Azure Cloud systems
– linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
– linux-hwe: Linux hardware enablement (HWE) kernel

Details:

It was discovered that the RSI 91x Wi-Fi driver in the Linux kernel did not
did not handle detach operations correctly, leading to a use-after-free
vulnerability. A physically proximate attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2018-21008)

Hui Peng and Mathias Payer discovered that the USB audio driver for the
Linux kernel did not properly validate device meta data. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2019-15117)

Hui Peng and Mathias Payer discovered that the USB audio driver for the
Linux kernel improperly performed recursion while handling device meta
data. A physically proximate attacker could use this to cause a denial of
service (system crash). (CVE-2019-15118)

It was discovered that the SMB networking file system implementation in the
Linux kernel contained a buffer overread. An attacker could use this to
expose sensitive information (kernel memory). (CVE-2019-15918)

Update instructions:

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

Ubuntu 18.04 LTS:
linux-image-4.15.0-1027-oracle 4.15.0-1027.30
linux-image-4.15.0-1046-gke 4.15.0-1046.49
linux-image-4.15.0-1048-kvm 4.15.0-1048.48
linux-image-4.15.0-1049-raspi2 4.15.0-1049.53
linux-image-4.15.0-1052-aws 4.15.0-1052.54
linux-image-4.15.0-1059-oem 4.15.0-1059.68
linux-image-4.15.0-1066-snapdragon 4.15.0-1066.73
linux-image-4.15.0-66-generic 4.15.0-66.75
linux-image-4.15.0-66-generic-lpae 4.15.0-66.75
linux-image-4.15.0-66-lowlatency 4.15.0-66.75
linux-image-aws 4.15.0.1052.51
linux-image-generic 4.15.0.66.68
linux-image-generic-lpae 4.15.0.66.68
linux-image-gke 4.15.0.1046.49
linux-image-gke-4.15 4.15.0.1046.49
linux-image-kvm 4.15.0.1048.48
linux-image-lowlatency 4.15.0.66.68
linux-image-oem 4.15.0.1059.63
linux-image-oracle 4.15.0.1027.30
linux-image-powerpc-e500mc 4.15.0.66.68
linux-image-powerpc-smp 4.15.0.66.68
linux-image-powerpc64-emb 4.15.0.66.68
linux-image-powerpc64-smp 4.15.0.66.68
linux-image-raspi2 4.15.0.1049.47
linux-image-snapdragon 4.15.0.1066.69
linux-image-virtual 4.15.0.66.68

Ubuntu 16.04 LTS:
linux-image-4.15.0-1027-oracle 4.15.0-1027.30~16.04.1
linux-image-4.15.0-1047-gcp 4.15.0-1047.50
linux-image-4.15.0-1052-aws 4.15.0-1052.54~16.04.1
linux-image-4.15.0-1061-azure 4.15.0-1061.66
linux-image-4.15.0-66-generic 4.15.0-66.75~16.04.1
linux-image-4.15.0-66-generic-lpae 4.15.0-66.75~16.04.1
linux-image-4.15.0-66-lowlatency 4.15.0-66.75~16.04.1
linux-image-aws-hwe 4.15.0.1052.52
linux-image-azure 4.15.0.1061.64
linux-image-gcp 4.15.0.1047.61
linux-image-generic-hwe-16.04 4.15.0.66.86
linux-image-generic-lpae-hwe-16.04 4.15.0.66.86
linux-image-gke 4.15.0.1047.61
linux-image-lowlatency-hwe-16.04 4.15.0.66.86
linux-image-oem 4.15.0.66.86
linux-image-oracle 4.15.0.1027.20
linux-image-virtual-hwe-16.04 4.15.0.66.86

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4162-1
CVE-2018-21008, CVE-2019-14814, CVE-2019-14815, CVE-2019-14816,
CVE-2019-14821, CVE-2019-15117, CVE-2019-15118, CVE-2019-15505,
CVE-2019-15902, CVE-2019-15918

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-66.75
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1052.54
https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1046.49
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1048.48
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1059.68
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1027.30
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1049.53
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1066.73
https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1052.54~16.04.1
https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1061.66
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1047.50
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-66.75~16.04.1
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1027.30~16.04.1

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==========================================================================
Ubuntu Security Notice USN-4163-1
October 22, 2019

linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
==========================================================================

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

– Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
– linux: Linux kernel
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-kvm: Linux kernel for cloud environments
– linux-raspi2: Linux kernel for Raspberry Pi 2
– linux-snapdragon: Linux kernel for Snapdragon processors

Details:

It was discovered that a race condition existed in the ARC EMAC ethernet
driver for the Linux kernel, resulting in a use-after-free vulnerability.
An attacker could use this to cause a denial of service (system crash).
(CVE-2016-10906)

It was discovered that a race condition existed in the Serial Attached SCSI
(SAS) implementation in the Linux kernel when handling certain error
conditions. A local attacker could use this to cause a denial of service
(kernel deadlock). (CVE-2017-18232)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.4.0-1060-kvm 4.4.0-1060.67
linux-image-4.4.0-1096-aws 4.4.0-1096.107
linux-image-4.4.0-1124-raspi2 4.4.0-1124.133
linux-image-4.4.0-1128-snapdragon 4.4.0-1128.136
linux-image-4.4.0-166-generic 4.4.0-166.195
linux-image-4.4.0-166-generic-lpae 4.4.0-166.195
linux-image-4.4.0-166-lowlatency 4.4.0-166.195
linux-image-4.4.0-166-powerpc-e500mc 4.4.0-166.195
linux-image-4.4.0-166-powerpc-smp 4.4.0-166.195
linux-image-4.4.0-166-powerpc64-emb 4.4.0-166.195
linux-image-4.4.0-166-powerpc64-smp 4.4.0-166.195
linux-image-aws 4.4.0.1096.100
linux-image-generic 4.4.0.166.174
linux-image-generic-lpae 4.4.0.166.174
linux-image-kvm 4.4.0.1060.60
linux-image-lowlatency 4.4.0.166.174
linux-image-powerpc-e500mc 4.4.0.166.174
linux-image-powerpc-smp 4.4.0.166.174
linux-image-powerpc64-emb 4.4.0.166.174
linux-image-powerpc64-smp 4.4.0.166.174
linux-image-raspi2 4.4.0.1124.124
linux-image-snapdragon 4.4.0.1128.120
linux-image-virtual 4.4.0.166.174

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4163-1
CVE-2016-10906, CVE-2017-18232, CVE-2018-21008, CVE-2019-14814,
CVE-2019-14816, CVE-2019-14821, CVE-2019-15117, CVE-2019-15118,
CVE-2019-15505, CVE-2019-15902

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-166.195
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1096.107
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1060.67
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1124.133
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1128.136

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