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CVE-2021-4122 Details

Description

It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2021-4122	CVE	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2031859	CVE	Permissions RequiredThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2032401	CVE	Issue TrackingThird Party Advisory
https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c	CVE	PatchThird Party Advisory
https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes	CVE	Release NotesVendor Advisory
https://access.redhat.com/security/cve/CVE-2021-4122	[email protected]	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2031859	[email protected]	Permissions RequiredThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2032401	[email protected]	Issue TrackingThird Party Advisory
https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c	[email protected]	PatchThird Party Advisory
https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes	[email protected]	Release NotesVendor Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-345	Insufficient Verification of Data Authenticity	[email protected]
CWE-345	Insufficient Verification of Data Authenticity	[email protected]

Affected Products

Product	Versions
cryptsetup project cryptsetup	< 2.3.7 >= 2.4.0, < 2.4.3
CPE cpe:2.3:a:cryptsetup_project:cryptsetup:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 29, 2022	Initial Analysis	[email protected]