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Ubuntu Security Notice USN-4627-1

Ubuntu Security Notice USN-4627-1
Posted Nov 11, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4627-1 - Moritz Lipp, Michael Schwarz, Andreas Kogler, David Oswald, Catherine Easdon, Claudio Canella, and Daniel Gruss discovered that the Intel Running Average Power Limit driver in the Linux kernel did not properly restrict access to power data. A local attacker could possibly use this to expose sensitive information.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-8694
MD5 | 68280722e12e55bac74350f6bcd8f78a

Ubuntu Security Notice USN-4627-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4627-1
November 11, 2020

linux, linux-gcp, linux-gcp-4.15, linux-gcp-5.4, linux-gke-4.15,
linux-gke-5.3, linux-hwe, linux-hwe-5.4, linux-oem, linux-oem-osp1,
linux-oracle, linux-oracle-5.4 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
- Ubuntu 12.04 ESM

Summary:

The system could be made to expose sensitive information.

Software Description:
- linux: Linux kernel
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-oracle: Linux kernel for Oracle 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-5.3: 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-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM

Details:

Moritz Lipp, Michael Schwarz, Andreas Kogler, David Oswald, Catherine
Easdon, Claudio Canella, and Daniel Gruss discovered that the Intel Running
Average Power Limit (RAPL) driver in the Linux kernel did not properly
restrict access to power data. A local attacker could possibly use this to
expose sensitive information.

Update instructions:

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

Ubuntu 20.04 LTS:
linux-image-5.4.0-1029-gcp 5.4.0-1029.31
linux-image-5.4.0-1029-oracle 5.4.0-1029.31
linux-image-5.4.0-53-generic 5.4.0-53.59
linux-image-5.4.0-53-generic-lpae 5.4.0-53.59
linux-image-5.4.0-53-lowlatency 5.4.0-53.59
linux-image-gcp 5.4.0.1029.37
linux-image-generic 5.4.0.53.56
linux-image-generic-hwe-20.04 5.4.0.53.56
linux-image-generic-lpae 5.4.0.53.56
linux-image-generic-lpae-hwe-20.04 5.4.0.53.56
linux-image-gke 5.4.0.1029.37
linux-image-lowlatency 5.4.0.53.56
linux-image-lowlatency-hwe-20.04 5.4.0.53.56
linux-image-oem 5.4.0.53.56
linux-image-oem-osp1 5.4.0.53.56
linux-image-oracle 5.4.0.1029.26
linux-image-virtual 5.4.0.53.56
linux-image-virtual-hwe-20.04 5.4.0.53.56

Ubuntu 18.04 LTS:
linux-image-4.15.0-1058-oracle 4.15.0-1058.64
linux-image-4.15.0-1073-gke 4.15.0-1073.78
linux-image-4.15.0-1087-gcp 4.15.0-1087.100
linux-image-4.15.0-1101-oem 4.15.0-1101.112
linux-image-4.15.0-123-generic 4.15.0-123.126
linux-image-4.15.0-123-generic-lpae 4.15.0-123.126
linux-image-4.15.0-123-lowlatency 4.15.0-123.126
linux-image-5.0.0-1071-oem-osp1 5.0.0-1071.77
linux-image-5.3.0-1039-gke 5.3.0-1039.42
linux-image-5.3.0-69-generic 5.3.0-69.65
linux-image-5.3.0-69-lowlatency 5.3.0-69.65
linux-image-5.4.0-1029-gcp 5.4.0-1029.31~18.04.1
linux-image-5.4.0-1029-oracle 5.4.0-1029.31~18.04.1
linux-image-5.4.0-53-generic 5.4.0-53.59~18.04.1
linux-image-5.4.0-53-generic-lpae 5.4.0-53.59~18.04.1
linux-image-5.4.0-53-lowlatency 5.4.0-53.59~18.04.1
linux-image-gcp 5.4.0.1029.17
linux-image-gcp-edge 5.4.0.1029.17
linux-image-gcp-lts-18.04 4.15.0.1087.105
linux-image-generic 4.15.0.123.110
linux-image-generic-hwe-18.04 5.4.0.53.59~18.04.47
linux-image-generic-lpae 4.15.0.123.110
linux-image-generic-lpae-hwe-18.04 5.4.0.53.59~18.04.47
linux-image-gke 4.15.0.1073.77
linux-image-gke-4.15 4.15.0.1073.77
linux-image-gke-5.3 5.3.0.1039.22
linux-image-gkeop-5.3 5.3.0.69.126
linux-image-lowlatency 4.15.0.123.110
linux-image-lowlatency-hwe-18.04 5.4.0.53.59~18.04.47
linux-image-oem 4.15.0.1101.105
linux-image-oem-osp1 5.0.0.1071.69
linux-image-oracle 5.4.0.1029.13
linux-image-oracle-edge 5.4.0.1029.13
linux-image-oracle-lts-18.04 4.15.0.1058.68
linux-image-powerpc-e500mc 4.15.0.123.110
linux-image-powerpc-smp 4.15.0.123.110
linux-image-powerpc64-emb 4.15.0.123.110
linux-image-powerpc64-smp 4.15.0.123.110
linux-image-snapdragon-hwe-18.04 5.4.0.53.59~18.04.47
linux-image-virtual 4.15.0.123.110
linux-image-virtual-hwe-18.04 5.4.0.53.59~18.04.47

Ubuntu 16.04 LTS:
linux-image-4.15.0-1058-oracle 4.15.0-1058.64~16.04.1
linux-image-4.15.0-1087-gcp 4.15.0-1087.100~16.04.1
linux-image-4.15.0-123-generic 4.15.0-123.126~16.04.1
linux-image-4.15.0-123-generic-lpae 4.15.0-123.126~16.04.1
linux-image-4.15.0-123-lowlatency 4.15.0-123.126~16.04.1
linux-image-4.4.0-194-generic 4.4.0-194.226
linux-image-4.4.0-194-generic-lpae 4.4.0-194.226
linux-image-4.4.0-194-lowlatency 4.4.0-194.226
linux-image-4.4.0-194-powerpc-e500mc 4.4.0-194.226
linux-image-4.4.0-194-powerpc-smp 4.4.0-194.226
linux-image-4.4.0-194-powerpc64-emb 4.4.0-194.226
linux-image-4.4.0-194-powerpc64-smp 4.4.0-194.226
linux-image-gcp 4.15.0.1087.88
linux-image-generic 4.4.0.194.200
linux-image-generic-hwe-16.04 4.15.0.123.123
linux-image-generic-lpae 4.4.0.194.200
linux-image-generic-lpae-hwe-16.04 4.15.0.123.123
linux-image-gke 4.15.0.1087.88
linux-image-lowlatency 4.4.0.194.200
linux-image-lowlatency-hwe-16.04 4.15.0.123.123
linux-image-oem 4.15.0.123.123
linux-image-oracle 4.15.0.1058.47
linux-image-powerpc-e500mc 4.4.0.194.200
linux-image-powerpc-smp 4.4.0.194.200
linux-image-powerpc64-emb 4.4.0.194.200
linux-image-powerpc64-smp 4.4.0.194.200
linux-image-virtual 4.4.0.194.200
linux-image-virtual-hwe-16.04 4.15.0.123.123

Ubuntu 14.04 ESM:
linux-image-3.13.0-183-generic 3.13.0-183.234
linux-image-3.13.0-183-generic-lpae 3.13.0-183.234
linux-image-3.13.0-183-lowlatency 3.13.0-183.234
linux-image-3.13.0-183-powerpc-e500 3.13.0-183.234
linux-image-3.13.0-183-powerpc-e500mc 3.13.0-183.234
linux-image-3.13.0-183-powerpc-smp 3.13.0-183.234
linux-image-3.13.0-183-powerpc64-emb 3.13.0-183.234
linux-image-3.13.0-183-powerpc64-smp 3.13.0-183.234
linux-image-4.4.0-194-generic 4.4.0-194.226~14.04.1
linux-image-4.4.0-194-generic-lpae 4.4.0-194.226~14.04.1
linux-image-4.4.0-194-lowlatency 4.4.0-194.226~14.04.1
linux-image-4.4.0-194-powerpc-e500mc 4.4.0-194.226~14.04.1
linux-image-4.4.0-194-powerpc-smp 4.4.0-194.226~14.04.1
linux-image-4.4.0-194-powerpc64-emb 4.4.0-194.226~14.04.1
linux-image-4.4.0-194-powerpc64-smp 4.4.0-194.226~14.04.1
linux-image-generic 3.13.0.183.192
linux-image-generic-lpae 3.13.0.183.192
linux-image-generic-lpae-lts-xenial 4.4.0.194.170
linux-image-generic-lts-xenial 4.4.0.194.170
linux-image-generic-pae 3.13.0.183.192
linux-image-highbank 3.13.0.183.192
linux-image-lowlatency 3.13.0.183.192
linux-image-lowlatency-lts-xenial 4.4.0.194.170
linux-image-lowlatency-pae 3.13.0.183.192
linux-image-omap 3.13.0.183.192
linux-image-powerpc-e500 3.13.0.183.192
linux-image-powerpc-e500mc 3.13.0.183.192
linux-image-powerpc-e500mc-lts-xenial 4.4.0.194.170
linux-image-powerpc-smp 3.13.0.183.192
linux-image-powerpc-smp-lts-xenial 4.4.0.194.170
linux-image-powerpc64-emb 3.13.0.183.192
linux-image-powerpc64-emb-lts-xenial 4.4.0.194.170
linux-image-powerpc64-smp 3.13.0.183.192
linux-image-powerpc64-smp-lts-xenial 4.4.0.194.170
linux-image-server 3.13.0.183.192
linux-image-virtual 3.13.0.183.192
linux-image-virtual-lts-xenial 4.4.0.194.170

Ubuntu 12.04 ESM:
linux-image-3.13.0-183-generic 3.13.0-183.234~12.04.1
linux-image-3.13.0-183-generic-lpae 3.13.0-183.234~12.04.1
linux-image-3.13.0-183-lowlatency 3.13.0-183.234~12.04.1
linux-image-generic-lpae-lts-trusty 3.13.0.183.169
linux-image-generic-lts-trusty 3.13.0.183.169

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/4627-1
CVE-2020-8694

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.4.0-53.59
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1029.31
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1029.31
https://launchpad.net/ubuntu/+source/linux/4.15.0-123.126
https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1087.100
https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1029.31~18.04.1
https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1073.78
https://launchpad.net/ubuntu/+source/linux-gke-5.3/5.3.0-1039.42
https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-69.65
https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-53.59~18.04.1
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1101.112
https://launchpad.net/ubuntu/+source/linux-oem-osp1/5.0.0-1071.77
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1058.64
https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1029.31~18.04.1
https://launchpad.net/ubuntu/+source/linux/4.4.0-194.226
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1087.100~16.04.1
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-123.126~16.04.1
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1058.64~16.04.1
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