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Fencer Vulns
medium 5.5

CVE-2020-12912 json

A potential vulnerability in the AMD extension to Linux "hwmon" service may allow an attacker to use the Linux-based Running Average Power…

published 2020-11-12 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-5192

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

A potential vulnerability in the AMD extension to Linux "hwmon" service may allow an attacker to use the Linux-based Running Average Power Limit (RAPL) interface to show various side channel attacks. In line with industry partners, AMD has updated the RAPL interface to require privileged access.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 5.9.9-1

debian advisories DEBIAN-CVE-2020-12912

  • linux-hwe-5.8 Ubuntu 20.04 LTS 5.8.0-34.37~20.04.2

ubuntu advisories UBUNTU-CVE-2020-12912

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • docker-stable SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +12 more 24.0.9_ce-150000.1.25.1
  • rootlesskit SLE Module for Containers 15 SP5, SLE Module for Containers 15 SP4, openSUSE Leap 15.5 +1 more 1.1.1-150000.1.3.3
  • docker SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +19 more 24.0.7_ce-150000.190.4
  • runc SLE Module for Containers 12 1.1.10-16.40.1
  • docker SLE Module for Containers 12 24.0.7_ce-98.103.1
  • containerd SLE Module for Containers 12 1.7.8-16.88.1
  • docker-stable SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 24.0.9_ce-1.20.1

suse advisories SUSE-SU-2025:03545-1SUSE-SU-2025:03540-1SUSE-SU-2023:4936-1SUSE-SU-2023:4625-1

  • docker-stable openSUSE Tumbleweed 24.0.9_ce-15.1
  • docker openSUSE Tumbleweed 24.0.7_ce-2.1

opensuse advisories openSUSE-SU-2025:15589-1openSUSE-SU-2024:13469-1

  • linux Arch Linux 5.9.9.arch1-1

arch linux advisories AVG-1301

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-12912 updated cvss 5.5

kernel: unprivileged access to RAPL allows for side channel attacks

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a AMD extension to Linux "hwmon" for Zen1 platforms

Classification

Weakness
  • CWE-749 Exposed Dangerous Method or Function
  • CWE-203 Observable Discrepancy

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.