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CVE-2020-8694

Published: 10 November 2020

Insufficient access control in the Linux kernel driver for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

From the Ubuntu security team

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.

Mitigation

Restrict permissions on the affected sysfs entries:
  $ sudo find /sys/devices/virtual/powercap/ -name energy_uj -exec chmod 400 {} \;
Priority

Medium

CVSS 3 base score: 5.6

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-123.126)
eoan Ignored
(reached end-of-life)
focal
Released (5.4.0-53.59)
groovy
Released (5.8.0-28.30)
precise Ignored
(was needs-triage ESM criteria)
trusty
Released (3.13.0-183.234)
upstream
Released (5.10~rc4)
xenial
Released (4.4.0-194.226)
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_POWERCAP is not set)
eoan Ignored
(reached end-of-life)
focal Not vulnerable
(# CONFIG_POWERCAP is not set)
groovy
Released (5.8.0-1013.14)
precise Does not exist

trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.10~rc4)
xenial Not vulnerable
(# CONFIG_POWERCAP is not set)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_POWERCAP is not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Not vulnerable
(# CONFIG_POWERCAP is not set)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Ignored
(reached end-of-life)
focal Not vulnerable
(# CONFIG_POWERCAP is not set)
groovy
Released (5.8.0-1012.13)
precise Does not exist

trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.10~rc4)
xenial Not vulnerable
(# CONFIG_POWERCAP is not set)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_POWERCAP is not set)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_POWERCAP is not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Ignored
(reached end-of-life)
focal
Released (5.4.0-1029.31)
groovy
Released (5.8.0-1011.11)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial
Released (4.15.0-1087.100~16.04.1)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1087.100)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1029.31~18.04.1)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1073.78)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1050.52)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1039.42)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic Pending
(5.4.0-1029.31~18.04.1)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic Pending
(5.4.0-1004.5)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-69.65)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial
Released (4.15.0-123.126~16.04.1)
linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-53.59~18.04.1)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-hwe-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Pending
(5.8.0-28.30~20.04.1)
groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Ignored
(was needs-triage now end-of-life)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_POWERCAP is not set)
eoan Ignored
(reached end-of-life)
focal Not vulnerable
(# CONFIG_POWERCAP is not set)
groovy
Released (5.8.0-1009.10)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Not vulnerable
(# CONFIG_POWERCAP is not set)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

precise
Released (3.13.0-183.234~12.04.1)
trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty
Released (4.4.0-194.226~14.04.1)
upstream
Released (5.10~rc4)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1101.112)
eoan Ignored
(reached end-of-life)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Ignored
(was needs-triage now end-of-life)
linux-oem-5.6
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal
Released (5.6.0-1033.35)
groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1071.77)
eoan Ignored
(reached end-of-life)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1058.64)
eoan Ignored
(reached end-of-life)
focal
Released (5.4.0-1029.31)
groovy
Released (5.8.0-1010.10)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial
Released (4.15.0-1058.64~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1029.31~18.04.1)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(# CONFIG_INTEL_RAPL is not set)
groovy
Released (5.8.0-1007.10)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_INTEL_RAPL is not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_INTEL_RAPL is not set)
eoan Ignored
(reached end-of-life)
focal Ignored
(was needs-triage now end-of-life)
groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Not vulnerable
(# CONFIG_INTEL_RAPL is not set)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_INTEL_RAPL is not set)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(# CONFIG_INTEL_RAPL is not set)
groovy
Released (5.8.0-8.9)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(# CONFIG_INTEL_RAPL is not set)
eoan Does not exist

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc4)
xenial Not vulnerable
(# CONFIG_INTEL_RAPL is not set)