synced 9 MIN AGO
01 Record

CVE-2020-16120

Unprivileged overlay + shiftfs read access

MediumPUBLISHEDCNA: canonical
CNA base score5.1 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

02 Description

Unprivileged overlay + shiftfs read access

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.41% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 35.1% of scored records. A rank, not a probability.
NVD base score
4.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-02-10 19:45Z5 YR AGO
Last updated
2024-09-16 18:49Z2 YR AGO
Reserved
2020-07-29
Assigning CNA
canonical
Record state
PUBLISHED
Severity
Medium (CVSS 5.1)
CNA CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
  • CWE-266Incorrect Privilege AssignmentBase
  • CWE-1220Insufficient Granularity of Access ControlBase
Data version
5.1
Document digest
e202c45b195e5cfd19a3d948393e5abdd881b8205c92029fa26c4fb5d410034c

05 Affected products

VendorProductVersionsPlatforms
Linux kernelLinux kernel5.11-stable to < 5.11.0—

06 References

07 Fixed in

Arch Linux

  • linux
    Fixed in 5.8.arch1-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • linux
    Fixed in 5.8.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • linux
    Fixed in 5.8.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 5.8.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • linux-aws-hwe
    Fixed in 4.15.0-1085.90~16.04.1
  • linux-azure
    Fixed in 4.15.0-1098.109~16.04.1
  • linux-gcp
    Fixed in 4.15.0-1086.98~16.04.1
  • linux-hwe
    Fixed in 4.15.0-120.122~16.04.1
  • linux-hwe-edge
    No fix yet
  • linux-oracle
    Fixed in 4.15.0-1056.61~16.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • linux
    Fixed in 4.15.0-121.123
  • linux-aws
    Fixed in 4.15.0-1086.91
  • linux-aws-5.0
    No fix yet
  • linux-aws-5.3
    No fix yet
  • linux-aws-5.4
    Fixed in 5.4.0-1028.29~18.04.1
  • linux-azure
    No fix yet
  • linux-azure-4.15
    Fixed in 4.15.0-1099.110
  • linux-azure-5.3
    No fix yet
  • linux-azure-5.4
    Fixed in 5.4.0-1031.32~18.04.1
  • linux-azure-edge
    No fix yet
  • linux-gcp
    No fix yet
  • linux-gcp-4.15
    Fixed in 4.15.0-1086.98
  • linux-gcp-5.3
    No fix yet
  • linux-gcp-5.4
    Fixed in 5.4.0-1028.29~18.04.1
  • linux-gcp-edge
    No fix yet
  • linux-gke-4.15
    Fixed in 4.15.0-1072.76
  • linux-gke-5.0
    Fixed in 5.0.0-1049.50
  • linux-gke-5.3
    Fixed in 5.3.0-1038.40
  • linux-gke-5.4
    Fixed in 5.4.0-1027.28~18.04.1
  • linux-gkeop-5.4
    Fixed in 5.4.0-1003.3
  • linux-hwe
    Fixed in 5.3.0-68.63
  • linux-hwe-5.4
    Fixed in 5.4.0-51.56~18.04.1
  • linux-hwe-edge
    No fix yet
  • linux-kvm
    Fixed in 4.15.0-1077.79
  • linux-oem
    Fixed in 4.15.0-1099.109
  • linux-oem-osp1
    Fixed in 5.0.0-1069.75
  • linux-oracle
    Fixed in 4.15.0-1057.62
  • linux-oracle-5.0
    No fix yet
  • linux-oracle-5.3
    No fix yet
  • linux-oracle-5.4
    Fixed in 5.4.0-1028.29~18.04.1
  • linux-raspi-5.4
    Fixed in 5.4.0-1021.24~18.04.1
  • linux-raspi2
    Fixed in 4.15.0-1073.78
  • linux-raspi2-5.3
    Fixed in 5.3.0-1035.37
  • linux-snapdragon
    Fixed in 4.15.0-1089.98

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • linux
    Fixed in 5.4.0-51.56
  • linux-aws
    Fixed in 5.4.0-1028.29
  • linux-azure
    Fixed in 5.4.0-1031.32
  • linux-azure-fde
    No fix yet
  • linux-gcp
    Fixed in 5.4.0-1028.29
  • linux-gke
    No fix yet
  • linux-kvm
    Fixed in 5.4.0-1026.27
  • linux-oem-5.6
    Fixed in 5.6.0-1031.32
  • linux-oracle
    Fixed in 5.4.0-1028.29
  • linux-raspi
    Fixed in 5.4.0-1021.24
  • linux-raspi2
    No fix yet
  • linux-riscv
    Fixed in 5.4.0-36.41

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • linux-intel-iot-realtime
    No fix yet
  • linux-lowlatency-hwe-6.2
    No fix yet
  • linux-realtime
    No fix yet
  • linux-riscv
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • linux-raspi-realtime
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • linux
    No fix yet
  • linux-aws
    No fix yet
  • linux-azure
    Fixed in 4.15.0-1098.109~14.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-lts-xenial
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • linux
    No fix yet
  • linux-aws
    No fix yet
  • linux-kvm
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • linux-azure-fde-5.15
    Fixed in 5.15.0-1114.123~20.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 16.04 LTS

  • linux-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 18.04 LTS

  • linux-aws-fips
    Fixed in 4.15.0-2030.31
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-azure-fips
    Fixed in 4.15.0-2012.14
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-fips
    Fixed in 4.15.0-1044.50
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 20.04 LTS

  • linux-aws-fips
    Fixed in 5.4.0-1069.73+fips2
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-azure-fips
    Fixed in 5.4.0-1073.76+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-gcp-fips
    Fixed in 5.4.0-1067.71~20.04.1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS 16.04 LTS

  • linux-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS 18.04 LTS

  • linux-aws-fips
    No fix yet
  • linux-azure-fips
    No fix yet
  • linux-fips
    No fix yet
  • linux-gcp-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS 20.04 LTS

  • linux-aws-fips
    No fix yet
  • linux-azure-fips
    No fix yet
  • linux-gcp-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.