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    CVE-2021-3979

    A key length flaw was found in Red Hat Ceph Storage. An attacker can exploit the fact that the key length is incorrectly passed in an encryption algorithm to create a non random key, which is weaker and can be exploited for loss of confidentiality and integrity on encrypted disks.

    Published:Jan 11, 2022
    Last Modified:Nov 3, 2025
    EPS:Aug 25, 2022
    EPSS Score:0.00293
    CVSS Score:6.5

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Redhat
    Product
    Ceph Storage
    Vendor
    Redhat
    Product
    Ceph Storage For Ibm Z Systems
    Vendor
    Redhat
    Product
    Ceph Storage For Power
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Openshift Container Storage
    Vendor
    Redhat
    Product
    Openshift Data Foundation
    Vendor
    Redhat
    Product
    Openstack Platform

    Exploits

    No exploit reference

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    References

    https://access.redhat.com/security/cve/CVE-2021-3979
    https://bugzilla.redhat.com/show_bug.cgi?id=2024788
    https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656
    https://github.com/ceph/ceph/pull/44765
    https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPOK44BESMIFW6BIOGCN452AKKOIIT6Q/
    https://tracker.ceph.com/issues/54006
    https://access.redhat.com/security/cve/CVE-2021-3979
    https://bugzilla.redhat.com/show_bug.cgi?id=2024788
    https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656
    https://github.com/ceph/ceph/pull/44765
    https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html
    https://lists.debian.org/debian-lts-announce/2025/09/msg00025.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPOK44BESMIFW6BIOGCN452AKKOIIT6Q/
    https://tracker.ceph.com/issues/54006

    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