Sicherheit: Ausführen von Code mit höheren Privilegien in Linux

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==========================================================================
Ubuntu Security Notice USN-4489-1
September 08, 2020

linux, linux-aws, linux-aws-5.3, linux-aws-5.4, linux-aws-hwe,
linux-azure, linux-azure-4.15, linux-azure-5.4, linux-gcp, linux-gcp-4.15,
linux-gcp-5.4, linux-gke-4.15, linux-gke-5.0, linux-gke-5.3, linux-hwe,
linux-hwe-5.4, linux-kvm, linux-oem, linux-oem-osp1, linux-oracle,
linux-oracle-5.4, linux-raspi, linux-raspi-5.4, linux-raspi2,
linux-raspi2-5.3, linux-snapdragon vulnerability
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM

Summary:

The system could be made to crash or run programs as an administrator.

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-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi (V8) systems
- linux-aws-5.3: Linux kernel for Amazon Web Services (AWS) systems
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke-4.15: Linux kernel for Google Container Engine (GKE) systems
- linux-gke-5.0: Linux kernel for Google Container Engine (GKE) systems
- linux-gke-5.3: Linux kernel for Google Container Engine (GKE) systems
- linux-hwe: Linux hardware enablement (HWE) kernel
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-oem: Linux kernel for OEM systems
- linux-oem-osp1: Linux kernel for OEM systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi (V8) systems
- linux-raspi2: Linux kernel for Raspberry Pi (V8) systems
- linux-raspi2-5.3: Linux kernel for Raspberry Pi (V8) systems
- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems

Details:

Or Cohen discovered that the AF_PACKET implementation in the Linux
kernel did not properly perform bounds checking in some situations. 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 20.04 LTS:
linux-image-5.4.0-1018-raspi 5.4.0-1018.20
linux-image-5.4.0-1024-aws 5.4.0-1024.24
linux-image-5.4.0-1024-gcp 5.4.0-1024.24
linux-image-5.4.0-1024-oracle 5.4.0-1024.24
linux-image-5.4.0-1025-azure 5.4.0-1025.25
linux-image-5.4.0-47-generic 5.4.0-47.51
linux-image-5.4.0-47-generic-lpae 5.4.0-47.51
linux-image-5.4.0-47-lowlatency 5.4.0-47.51
linux-image-aws 5.4.0.1024.25
linux-image-azure 5.4.0.1025.24
linux-image-gcp 5.4.0.1024.21
linux-image-generic 5.4.0.47.50
linux-image-generic-lpae 5.4.0.47.50
linux-image-gke 5.4.0.1024.21
linux-image-kvm 5.4.0.1023.21
linux-image-lowlatency 5.4.0.47.50
linux-image-oem 5.4.0.47.50
linux-image-oem-osp1 5.4.0.47.50
linux-image-oracle 5.4.0.1024.21
linux-image-raspi 5.4.0.1018.53
linux-image-raspi2 5.4.0.1018.53
linux-image-virtual 5.4.0.47.50

Ubuntu 18.04 LTS:
linux-image-4.15.0-1053-oracle 4.15.0-1053.57
linux-image-4.15.0-1069-gke 4.15.0-1069.72
linux-image-4.15.0-1070-raspi2 4.15.0-1070.74
linux-image-4.15.0-1074-kvm 4.15.0-1074.75
linux-image-4.15.0-1082-aws 4.15.0-1082.86
linux-image-4.15.0-1083-gcp 4.15.0-1083.94
linux-image-4.15.0-1086-snapdragon 4.15.0-1086.94
linux-image-4.15.0-1095-azure 4.15.0-1095.105
linux-image-4.15.0-1096-oem 4.15.0-1096.106
linux-image-4.15.0-117-generic 4.15.0-117.118
linux-image-4.15.0-117-generic-lpae 4.15.0-117.118
linux-image-4.15.0-117-lowlatency 4.15.0-117.118
linux-image-5.0.0-1047-gke 5.0.0-1047.48
linux-image-5.0.0-1068-oem-osp1 5.0.0-1068.73
linux-image-5.3.0-1033-raspi2 5.3.0-1033.35
linux-image-5.3.0-1035-aws 5.3.0-1035.37
linux-image-5.3.0-1036-gke 5.3.0-1036.38
linux-image-5.3.0-67-generic 5.3.0-67.61
linux-image-5.3.0-67-lowlatency 5.3.0-67.61
linux-image-5.4.0-1018-raspi 5.4.0-1018.20~18.04.1
linux-image-5.4.0-1024-aws 5.4.0-1024.24~18.04.1
linux-image-5.4.0-1024-gcp 5.4.0-1024.24~18.04.1
linux-image-5.4.0-1024-oracle 5.4.0-1024.24~18.04.1
linux-image-5.4.0-1025-azure 5.4.0-1025.25~18.04.1
linux-image-5.4.0-47-generic 5.4.0-47.51~18.04.1
linux-image-5.4.0-47-generic-lpae 5.4.0-47.51~18.04.1
linux-image-5.4.0-47-lowlatency 5.4.0-47.51~18.04.1
linux-image-aws 5.3.0.1035.34
linux-image-aws-lts-18.04 4.15.0.1082.84
linux-image-azure 5.4.0.1025.8
linux-image-azure-lts-18.04 4.15.0.1095.68
linux-image-gcp 5.4.0.1024.11
linux-image-gcp-lts-18.04 4.15.0.1083.101
linux-image-generic 4.15.0.117.104
linux-image-generic-hwe-18.04 5.4.0.47.51~18.04.40
linux-image-generic-lpae 4.15.0.117.104
linux-image-generic-lpae-hwe-18.04 5.4.0.47.51~18.04.40
linux-image-gke 4.15.0.1069.73
linux-image-gke-4.15 4.15.0.1069.73
linux-image-gke-5.0 5.0.0.1047.32
linux-image-gke-5.3 5.3.0.1036.20
linux-image-gke-5.4 5.4.0.1024.11
linux-image-gkeop-5.3 5.3.0.67.124
linux-image-gkeop-5.4 5.4.0.47.51~18.04.40
linux-image-kvm 4.15.0.1074.70
linux-image-lowlatency 4.15.0.117.104
linux-image-lowlatency-hwe-18.04 5.4.0.47.51~18.04.40
linux-image-oem 4.15.0.1096.100
linux-image-oem-osp1 5.0.0.1068.66
linux-image-oracle 5.4.0.1024.8
linux-image-oracle-lts-18.04 4.15.0.1053.63
linux-image-powerpc-e500mc 4.15.0.117.104
linux-image-powerpc-smp 4.15.0.117.104
linux-image-powerpc64-emb 4.15.0.117.104
linux-image-powerpc64-smp 4.15.0.117.104
linux-image-raspi-hwe-18.04 5.4.0.1018.22
linux-image-raspi2 4.15.0.1070.67
linux-image-raspi2-hwe-18.04 5.3.0.1033.23
linux-image-snapdragon 4.15.0.1086.89
linux-image-snapdragon-hwe-18.04 5.4.0.47.51~18.04.40
linux-image-virtual 4.15.0.117.104
linux-image-virtual-hwe-18.04 5.4.0.47.51~18.04.40

Ubuntu 16.04 LTS:
linux-image-4.15.0-1053-oracle 4.15.0-1053.57~16.04.1
linux-image-4.15.0-1082-aws 4.15.0-1082.86~16.04.1
linux-image-4.15.0-1083-gcp 4.15.0-1083.94~16.04.1
linux-image-4.15.0-1095-azure 4.15.0-1095.105~16.04.1
linux-image-4.15.0-117-generic 4.15.0-117.118~16.04.1
linux-image-4.15.0-117-generic-lpae 4.15.0-117.118~16.04.1
linux-image-4.15.0-117-lowlatency 4.15.0-117.118~16.04.1
linux-image-aws-hwe 4.15.0.1082.78
linux-image-azure 4.15.0.1095.89
linux-image-gcp 4.15.0.1083.84
linux-image-generic-hwe-16.04 4.15.0.117.118
linux-image-generic-lpae-hwe-16.04 4.15.0.117.118
linux-image-gke 4.15.0.1083.84
linux-image-lowlatency-hwe-16.04 4.15.0.117.118
linux-image-oem 4.15.0.117.118
linux-image-oracle 4.15.0.1053.43
linux-image-virtual-hwe-16.04 4.15.0.117.118

Ubuntu 14.04 ESM:
linux-image-4.15.0-1095-azure 4.15.0-1095.105~14.04.1
linux-image-azure 4.15.0.1095.71

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/4489-1
CVE-2020-14386

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.4.0-47.51
https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1024.24
https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1025.25
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1024.24
https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1023.23
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1024.24
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1018.20
https://launchpad.net/ubuntu/+source/linux/4.15.0-117.118
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1082.86
https://launchpad.net/ubuntu/+source/linux-aws-5.3/5.3.0-1035.37
https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1024.24~18.04.1
https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1095.105
https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1025.25~18.04.1
https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1083.94
https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1024.24~18.04.1
https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1069.72
https://launchpad.net/ubuntu/+source/linux-gke-5.0/5.0.0-1047.48
https://launchpad.net/ubuntu/+source/linux-gke-5.3/5.3.0-1036.38
https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-67.61
https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-47.51~18.04.1
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1074.75
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1096.106
https://launchpad.net/ubuntu/+source/linux-oem-osp1/5.0.0-1068.73
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1053.57
https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1024.24~18.04.1
https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1018.20~18.04.1
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1070.74
https://launchpad.net/ubuntu/+source/linux-raspi2-5.3/5.3.0-1033.35
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1086.94
https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1082.86~16.04.1
https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1095.105~16.04.1
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1083.94~16.04.1
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-117.118~16.04.1
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1053.57~16.04.1

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