CVE-2020-16120
Unprivileged overlay + shiftfs read access
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
- Data version
- 5.1
- Document digest
- e202c45b195e5cfd19a3d948393e5abdd881b8205c92029fa26c4fb5d410034c
05 Affected products
06 References
- ubuntu.comhttps://ubuntu.com/USN-4576-1
- ubuntu.comhttps://ubuntu.com/USN-4577-1
- ubuntu.comhttps://ubuntu.com/USN-4578-1
- www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/10/14/2
- launchpad.nethttps://launchpad.net/bugs/1894980
- launchpad.nethttps://launchpad.net/bugs/1900141
- git.kernel.orghttps://git.kernel.org/linus/56230d956739b9cb1cbde439d76227d77979a04d
- git.kernel.orghttps://git.kernel.org/linus/48bd024b8a40d73ad6b086de2615738da0c7004f
- git.kernel.orghttps://git.kernel.org/linus/05acefb4872dae89e772729efb194af754c877e8
- git.kernel.orghttps://git.kernel.org/linus/d1d04ef8572bc8c22265057bd3d5a79f223f8f52
- git.kernel.orghttps://git.kernel.org/linus/b6650dab404c701d7fe08a108b746542a934da84
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 4.15.0-1098.109~14.04.1Available 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 5.15.0-1114.123~20.04.1Available 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 4.15.0-2030.31Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2012.14Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 4.15.0-1044.50Available 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+fips2Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1073.76+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1067.71~20.04.1Available 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.