CVE-2021-3732

    Dashboard / Vulnerabilities / CVE-2021-3732

    CVE-2021-3732

    Published: 10 Mar 2022Last Modified: 15 Mar 2026

    Summary:

    Details: A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.

    References: https://ubuntu.com/security/CVE-2021-3732, https://bugzilla.redhat.com/show_bug.cgi?id=1995249, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=427215d85e8d1476da1a86b8d67aceb485eb3631, https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb3631

    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-2021-3732 | CVE-DB