=========================================================================Ubuntu Security Notice USN-4689-2
January 11, 2021

linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-4.15,
linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-hwe-5.8,
linux-oem-5.6, linux-oracle, linux-oracle-5.4 vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- 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-oracle: Linux kernel for Oracle Cloud systems
- linux-hwe-5.8: Linux hardware enablement (HWE) kernel
- linux-oem-5.6: Linux kernel for OEM 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-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems

Details:

USN-4689-1 fixed vulnerabilities in the NVIDIA graphics drivers.
This update provides the corresponding updates for the NVIDIA Linux
DKMS kernel modules.

Original advisory details:

 It was discovered that the NVIDIA GPU display driver for the Linux kernel
 contained a vulnerability that allowed user-mode clients to access legacy
 privileged APIs. A local attacker could use this to cause a denial of
 service or escalate privileges. (CVE-2021-1052)

 It was discovered that the NVIDIA GPU display driver for the Linux kernel
 did not properly validate a pointer received from userspace in some
 situations. A local attacker could use this to cause a denial of service.
 (CVE-2021-1053)

 Xinyuan Lyu discovered that the NVIDIA GPU display driver for the Linux
 kernel did not properly restrict device-level GPU isolation. A local
 attacker could use this to cause a denial of service or possibly expose
 sensitive information. (CVE-2021-1056)

Update instructions:

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

Ubuntu 20.10:
  linux-image-5.8.0-1015-oracle   5.8.0-1015.16
  linux-image-5.8.0-1016-gcp      5.8.0-1016.17
  linux-image-5.8.0-1017-azure    5.8.0-1017.19
  linux-image-5.8.0-1018-aws      5.8.0-1018.20
  linux-image-5.8.0-36-generic    5.8.0-36.40
  linux-image-5.8.0-36-lowlatency  5.8.0-36.40
  linux-image-aws                 5.8.0.1018.20
  linux-image-azure               5.8.0.1017.17
  linux-image-gcp                 5.8.0.1016.16
  linux-image-generic             5.8.0.36.40
  linux-image-gke                 5.8.0.1016.16
  linux-image-lowlatency          5.8.0.36.40
  linux-image-oracle              5.8.0.1015.15
  linux-image-virtual             5.8.0.36.40

Ubuntu 20.04 LTS:
  linux-image-5.4.0-1034-gcp      5.4.0-1034.37
  linux-image-5.4.0-1035-aws      5.4.0-1035.37
  linux-image-5.4.0-1035-oracle   5.4.0-1035.38
  linux-image-5.4.0-1036-azure    5.4.0-1036.38
  linux-image-5.4.0-60-generic    5.4.0-60.67
  linux-image-5.4.0-60-lowlatency  5.4.0-60.67
  linux-image-5.6.0-1042-oem      5.6.0-1042.46
  linux-image-5.8.0-36-generic    5.8.0-36.40~20.04.1
  linux-image-5.8.0-36-lowlatency  5.8.0-36.40~20.04.1
  linux-image-aws                 5.4.0.1035.36
  linux-image-azure               5.4.0.1036.34
  linux-image-gcp                 5.4.0.1034.43
  linux-image-generic             5.4.0.60.63
  linux-image-generic-hwe-20.04   5.8.0.36.40~20.04.21
  linux-image-lowlatency          5.4.0.60.63
  linux-image-lowlatency-hwe-20.04  5.8.0.36.40~20.04.21
  linux-image-oem                 5.4.0.60.63
  linux-image-oem-20.04           5.6.0.1042.38
  linux-image-oem-osp1            5.4.0.60.63
  linux-image-oracle              5.4.0.1035.32
  linux-image-virtual             5.4.0.60.63
  linux-image-virtual-hwe-20.04   5.8.0.36.40~20.04.21

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1063-oracle  4.15.0-1063.70
  linux-image-4.15.0-1092-aws     4.15.0-1092.98
  linux-image-4.15.0-1104-azure   4.15.0-1104.116
  linux-image-4.15.0-130-generic  4.15.0-130.134
  linux-image-4.15.0-130-lowlatency  4.15.0-130.134
  linux-image-5.4.0-1034-gcp      5.4.0-1034.37~18.04.1
  linux-image-5.4.0-1035-aws      5.4.0-1035.37~18.04.1
  linux-image-5.4.0-1035-oracle   5.4.0-1035.38~18.04.1
  linux-image-5.4.0-1036-azure    5.4.0-1036.38~18.04.1
  linux-image-5.4.0-60-generic    5.4.0-60.67~18.04.1
  linux-image-5.4.0-60-lowlatency  5.4.0-60.67~18.04.1
  linux-image-aws                 5.4.0.1035.20
  linux-image-aws-lts-18.04       4.15.0.1092.94
  linux-image-azure               5.4.0.1036.18
  linux-image-azure-lts-18.04     4.15.0.1104.77
  linux-image-gcp                 5.4.0.1034.22
  linux-image-generic             4.15.0.130.117
  linux-image-generic-hwe-18.04   5.4.0.60.67~18.04.55
  linux-image-lowlatency          4.15.0.130.117
  linux-image-lowlatency-hwe-18.04  5.4.0.60.67~18.04.55
  linux-image-oem                 5.4.0.60.67~18.04.55
  linux-image-oem-osp1            5.4.0.60.67~18.04.55
  linux-image-oracle              5.4.0.1035.38~18.04.19
  linux-image-oracle-lts-18.04    4.15.0.1063.73
  linux-image-virtual             4.15.0.130.117
  linux-image-virtual-hwe-18.04   5.4.0.60.67~18.04.55

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://ubuntu.com/security/notices/USN-4689-2
  https://ubuntu.com/security/notices/USN-4689-1
  CVE-2021-1052, CVE-2021-1053, CVE-2021-1056

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.8.0-36.40
  https://launchpad.net/ubuntu/+source/linux-aws/5.8.0-1018.20
  https://launchpad.net/ubuntu/+source/linux-azure/5.8.0-1017.19
  https://launchpad.net/ubuntu/+source/linux-gcp/5.8.0-1016.17
  https://launchpad.net/ubuntu/+source/linux-oracle/5.8.0-1015.16
  https://launchpad.net/ubuntu/+source/linux/5.4.0-60.67
  https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1035.37
  https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1036.38
  https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1034.37
  https://launchpad.net/ubuntu/+source/linux-hwe-5.8/5.8.0-36.40~20.04.1
  https://launchpad.net/ubuntu/+source/linux-oem-5.6/5.6.0-1042.46
  https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1035.38
  https://launchpad.net/ubuntu/+source/linux/4.15.0-130.134
  https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1092.98
  https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1035.37~18.04.1
  https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1104.116
  https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1036.38~18.04.1
  https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1034.37~18.04.1
  https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-60.67~18.04.1
  https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1063.70
  https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1035.38~18.04.1

Ubuntu 4689-2: Linux kernel vulnerabilities

January 11, 2021
Several security issues were fixed in the Linux kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: linux-image-5.8.0-1015-oracle 5.8.0-1015.16 linux-image-5.8.0-1016-gcp 5.8.0-1016.17 linux-image-5.8.0-1017-azure 5.8.0-1017.19 linux-image-5.8.0-1018-aws 5.8.0-1018.20 linux-image-5.8.0-36-generic 5.8.0-36.40 linux-image-5.8.0-36-lowlatency 5.8.0-36.40 linux-image-aws 5.8.0.1018.20 linux-image-azure 5.8.0.1017.17 linux-image-gcp 5.8.0.1016.16 linux-image-generic 5.8.0.36.40 linux-image-gke 5.8.0.1016.16 linux-image-lowlatency 5.8.0.36.40 linux-image-oracle 5.8.0.1015.15 linux-image-virtual 5.8.0.36.40 Ubuntu 20.04 LTS: linux-image-5.4.0-1034-gcp 5.4.0-1034.37 linux-image-5.4.0-1035-aws 5.4.0-1035.37 linux-image-5.4.0-1035-oracle 5.4.0-1035.38 linux-image-5.4.0-1036-azure 5.4.0-1036.38 linux-image-5.4.0-60-generic 5.4.0-60.67 linux-image-5.4.0-60-lowlatency 5.4.0-60.67 linux-image-5.6.0-1042-oem 5.6.0-1042.46 linux-image-5.8.0-36-generic 5.8.0-36.40~20.04.1 linux-image-5.8.0-36-lowlatency 5.8.0-36.40~20.04.1 linux-image-aws 5.4.0.1035.36 linux-image-azure 5.4.0.1036.34 linux-image-gcp 5.4.0.1034.43 linux-image-generic 5.4.0.60.63 linux-image-generic-hwe-20.04 5.8.0.36.40~20.04.21 linux-image-lowlatency 5.4.0.60.63 linux-image-lowlatency-hwe-20.04 5.8.0.36.40~20.04.21 linux-image-oem 5.4.0.60.63 linux-image-oem-20.04 5.6.0.1042.38 linux-image-oem-osp1 5.4.0.60.63 linux-image-oracle 5.4.0.1035.32 linux-image-virtual 5.4.0.60.63 linux-image-virtual-hwe-20.04 5.8.0.36.40~20.04.21 Ubuntu 18.04 LTS: linux-image-4.15.0-1063-oracle 4.15.0-1063.70 linux-image-4.15.0-1092-aws 4.15.0-1092.98 linux-image-4.15.0-1104-azure 4.15.0-1104.116 linux-image-4.15.0-130-generic 4.15.0-130.134 linux-image-4.15.0-130-lowlatency 4.15.0-130.134 linux-image-5.4.0-1034-gcp 5.4.0-1034.37~18.04.1 linux-image-5.4.0-1035-aws 5.4.0-1035.37~18.04.1 linux-image-5.4.0-1035-oracle 5.4.0-1035.38~18.04.1 linux-image-5.4.0-1036-azure 5.4.0-1036.38~18.04.1 linux-image-5.4.0-60-generic 5.4.0-60.67~18.04.1 linux-image-5.4.0-60-lowlatency 5.4.0-60.67~18.04.1 linux-image-aws 5.4.0.1035.20 linux-image-aws-lts-18.04 4.15.0.1092.94 linux-image-azure 5.4.0.1036.18 linux-image-azure-lts-18.04 4.15.0.1104.77 linux-image-gcp 5.4.0.1034.22 linux-image-generic 4.15.0.130.117 linux-image-generic-hwe-18.04 5.4.0.60.67~18.04.55 linux-image-lowlatency 4.15.0.130.117 linux-image-lowlatency-hwe-18.04 5.4.0.60.67~18.04.55 linux-image-oem 5.4.0.60.67~18.04.55 linux-image-oem-osp1 5.4.0.60.67~18.04.55 linux-image-oracle 5.4.0.1035.38~18.04.19 linux-image-oracle-lts-18.04 4.15.0.1063.73 linux-image-virtual 4.15.0.130.117 linux-image-virtual-hwe-18.04 5.4.0.60.67~18.04.55 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://ubuntu.com/security/notices/USN-4689-2

https://ubuntu.com/security/notices/USN-4689-1

CVE-2021-1052, CVE-2021-1053, CVE-2021-1056

Severity
January 11, 2021

Package Information

https://launchpad.net/ubuntu/+source/linux/5.8.0-36.40 https://launchpad.net/ubuntu/+source/linux-aws/5.8.0-1018.20 https://launchpad.net/ubuntu/+source/linux-azure/5.8.0-1017.19 https://launchpad.net/ubuntu/+source/linux-gcp/5.8.0-1016.17 https://launchpad.net/ubuntu/+source/linux-oracle/5.8.0-1015.16 https://launchpad.net/ubuntu/+source/linux/5.4.0-60.67 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1035.37 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1036.38 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1034.37 https://launchpad.net/ubuntu/+source/linux-hwe-5.8/5.8.0-36.40~20.04.1 https://launchpad.net/ubuntu/+source/linux-oem-5.6/5.6.0-1042.46 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1035.38 https://launchpad.net/ubuntu/+source/linux/4.15.0-130.134 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1092.98 https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1035.37~18.04.1 https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1104.116 https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1036.38~18.04.1 https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1034.37~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-60.67~18.04.1 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1063.70 https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1035.38~18.04.1

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