CVE-2021-4157

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    CVE-2021-4157

    Published: 25 Mar 2022Last Modified: 14 Mar 2026

    Summary:

    Details: An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.

    References: https://lore.kernel.org/lkml/20210517140244.822185482%40linuxfoundation.org/, https://security.netapp.com/advisory/ntap-20220602-0007/, https://www.oracle.com/security-alerts/cpujul2022.html, https://bugzilla.redhat.com/show_bug.cgi?id=2034342

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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-2021-4157 | CVE-DB