PT-2020-5849 · Docker+3 · Docker+3

Brad Geesaman

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Published

2020-12-22

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Updated

2026-05-18

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CVE-2021-21285

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions: Docker versions prior to 19.03.15 Docker versions prior to 20.10.3
Description: The issue is related to the incorrect processing of a Docker image manifest, which can cause the dockerd daemon to crash when an intentionally malformed image manifest is pulled. This can be exploited by a remote attacker to cause a denial of service.
Recommendations: For Docker versions prior to 19.03.15, update to version 19.03.15 or later to prevent the daemon from crashing. For Docker versions prior to 20.10.3, update to version 20.10.3 or later to prevent the daemon from crashing.

Fix

DoS

Resource Exhaustion

Improper Check for Exceptional Conditions

Weakness Enumeration

Related Identifiers

ALT-PU-2021-4842
BDU:2021-01892
CLEANSTART-2026-BK59402
CLEANSTART-2026-BN11148
CLEANSTART-2026-GY69323
CLEANSTART-2026-HI89495
CLEANSTART-2026-HL71566
CLEANSTART-2026-JD48541
CLEANSTART-2026-OS18490
CLEANSTART-2026-SB85645
CLEANSTART-2026-SP51034
CLEANSTART-2026-TD34476
CLEANSTART-2026-XL45869
CLEANSTART-2026-YB44027
CLEANSTART-2026-ZM20570
CVE-2021-21285
DSA-4865-1
GHSA-6FJ5-M822-RQX8
OESA-2021-1102
OPENSUSE-SU-2021:0278-1
OPENSUSE-SU-2021:0878-1
OPENSUSE-SU-2021:1954-1
OPENSUSE-SU-2021_0278-1
OPENSUSE-SU-2021_0878-1
OPENSUSE-SU-2021_1954-1
SUSE-SU-2021:0435-1
SUSE-SU-2021:0445-1
SUSE-SU-2021:1458-1
SUSE-SU-2021:1954-1
SUSE-SU-2025:03540-1
SUSE-SU-2025:03545-1
USN-5032-1
USN-5032-2

Affected Products

Alt Linux
Astra Linux
Docker
Suse