Directory Traversal Affecting docker-stable package, versions <24.0.9_ce-150000.1.25.1


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
1.07% (61st percentile)

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  • Snyk IDSNYK-SLES154-DOCKERSTABLE-13543615
  • published14 Oct 2025
  • disclosed11 Oct 2025

Introduced: 11 Oct 2025

CVE-2021-21284  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 docker-stable to version 24.0.9_ce-150000.1.25.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream docker-stable package and not the docker-stable package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using "--userns-remap", if the root user in the remapped namespace has access to the host filesystem they can modify files under "/var/lib/docker/<remapping>" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.

CVSS Base Scores

version 3.1