CVE-2021-4122

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    CVE-2021-4122

    Published: 24 Aug 2022Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

    References: https://access.redhat.com/security/cve/CVE-2021-4122, https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes, https://bugzilla.redhat.com/show_bug.cgi?id=2031859, https://bugzilla.redhat.com/show_bug.cgi?id=2032401, https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -1fae09d6077183dbddc79f914ab9cf65eb4a9ced

    Affected versions

    v2.4.2
    v2.4.1
    v2.4.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-4122 | CVE-DB