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Fencer Intel
medium 5.5

CVE-2020-11669 json

An issue was discovered in the Linux kernel before 5.2 on the powerpc platform.

published 6y ago modified 4mo ago also EUVD-2020-4012

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 42%
public exploits
0
none known

Summary

An issue was discovered in the Linux kernel before 5.2 on the powerpc platform. arch/powerpc/kernel/idle_book3s.S does not have save/restore functionality for PNV_POWERSAVE_AMR, PNV_POWERSAVE_UAMOR, and PNV_POWERSAVE_AMOR, aka CID-53a712bae5dd.

Patch / fix

  • linux linux_kernel 5.2
  • linux Debian 14, Debian 13, Debian 12 5.2.6-1

debian advisories DEBIAN-CVE-2020-11669

  • linux Ubuntu 18.04 LTS 4.15.0-101.102
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1067.71
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-101.102~16.04.1
  • linux-hwe Ubuntu 18.04 LTS 5.3.0-26.28~18.04.1
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1060.61
  • linux-oem Ubuntu 18.04 LTS 4.15.0-1081.91
  • linux-azure Ubuntu 16.04 LTS 4.15.0-1083.93~16.04.1
  • linux-oracle Ubuntu 16.04 LTS 4.15.0-1039.43~16.04.1

ubuntu advisories UBUNTU-CVE-2020-11669

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

  • kernel-alt RHEL 7 4.14.0-115.36.1.el7a
  • perf RHEL 7 4.14.0-115.36.1.el7a
  • kernel RHEL 7 4.14.0-115.36.1.el7a
  • python-perf RHEL 7 4.14.0-115.36.1.el7a
  • kernel-tools RHEL 7 4.14.0-115.36.1.el7a
  • kernel-tools-libs RHEL 7 4.14.0-115.36.1.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-115.36.1.el7a
  • kernel-debuginfo-common-ppc64le RHEL 7 4.14.0-115.36.1.el7a

red hat advisories RHSA-2021:1379

  • kernel-rt Real Time Module 15 SP1 4.12.14-14.28.1
  • kernel-syms-rt Real Time Module 15 SP1 4.12.14-14.28.1
  • kernel-rt_debug Real Time Module 15 SP1 4.12.14-14.28.1
  • kernel-source-rt Real Time Module 15 SP1 4.12.14-14.28.1
  • kernel-rt SLE Real Time 12 SP5 4.12.14-10.13.1
  • kernel-syms-rt SLE Real Time 12 SP5 4.12.14-10.13.1
  • kernel-rt_debug SLE Real Time 12 SP5 4.12.14-10.13.1
  • kernel-source-rt SLE Real Time 12 SP5 4.12.14-10.13.1

suse advisories SUSE-SU-2020:2487-1SUSE-SU-2020:2478-1SUSE-SU-2020:1663-1SUSE-SU-2020:1146-1SUSE-SU-2020:1142-1SUSE-SU-2020:1141-1

  • kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.48.1
  • kernel-obs-qa openSUSE Leap 15.1 4.12.14-lp151.28.48.1
  • kernel-source openSUSE Leap 15.1 4.12.14-lp151.28.48.1
  • kernel-default openSUSE Leap 15.1 4.12.14-lp151.28.48.1
  • kernel-vanilla openSUSE Leap 15.1 4.12.14-lp151.28.48.1
  • kernel-kvmsmall openSUSE Leap 15.1 4.12.14-lp151.28.48.1
  • kernel-obs-build openSUSE Leap 15.1 4.12.14-lp151.28.48.1

opensuse advisories openSUSE-SU-2020:0543-1

Is CVE-2020-11669 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2020-11669 updated cvss 5.5

kernel: powerpc: guest can cause DoS on POWER9 KVM hosts

  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-115.36.1.el7a, kernel 4.14.0-115.36.1.el7a, kernel-alt 4.14.0-115.36.1.el7a, python-perf 4.14.0-115.36.1.el7a, kernel-tools 4.14.0-115.36.1.el7a, kernel-tools-libs 4.14.0-115.36.1.el7a, +2 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 4.14.0-115.36.1.el7a
    fixed: vendor fix RHSA-2021:1379
  • 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, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-abi-whitelists 4.14.0-115.36.1.el7a 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

0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).

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:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Technology feeds

References

Sources

Fencer Intel 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.