UBUNTU-CVE-2020-8428

Advisory lineage Upstream: 1 Downstream: 6
Upstream
CVE-2020-8428
Published: 29 Jan 2020, 00:15
Last modified:03 Jun 2026, 13:34

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Jan 2020, 00:15
Published
Vulnerability first disclosed
03 Jun 2026, 13:34
Last Modified
Vulnerability information updated

Description

fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Systems

  • ubuntu•linux

    < 4.4.0-177.207 | < 4.15.0-96.97

  • ubuntu•linux-aws

    < 4.4.0-1065.69 | < 4.4.0-1105.116 | < 4.15.0-1065.69

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1065.69~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1077.82~14.04.1 | < 4.15.0-1077.82 | < 5.0.0-1036.38

  • ubuntu•linux-azure-5.3

    < 5.3.0-1019.20~18.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    < 4.4.0-1032.37 | all

  • ubuntu•linux-gcp

    < 4.15.0-1060.64 | < 5.0.0-1034.35

  • ubuntu•linux-gcp-5.3

    < 5.3.0-1017.18~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1057.60

  • ubuntu•linux-gke-5.0

    < 5.0.0-1033.34

  • ubuntu•linux-gke-5.3

    < 5.3.0-1017.18~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-96.97~16.04.1 | < 5.3.0-46.38~18.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1069.76 | < 4.15.0-1058.59

  • ubuntu•linux-lts-xenial

    < 4.4.0-177.207~14.04.1

  • ubuntu•linux-nvidia

    all

  • ubuntu•linux-oem

    < 4.15.0-1079.89

  • ubuntu•linux-oem-osp1

    < 5.0.0-1047.52

  • ubuntu•linux-oracle

    < 4.15.0-1037.41~16.04.1 | < 4.15.0-1037.41

  • ubuntu•linux-oracle-5.0

    < 5.0.0-1014.19

  • ubuntu•linux-oracle-5.3

    < 5.3.0-1014.15~18.04.1

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1131.140 | < 4.15.0-1060.64 | all

  • ubuntu•linux-raspi2-5.3

    < 5.3.0-1022.24~18.04.1

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-snapdragon

    < 4.4.0-1135.143 | < 4.15.0-1076.83

References (11)