CVE-2021-44731

    Dashboard / Vulnerabilities / CVE-2021-44731

    CVE-2021-44731

    Published: 17 Feb 2022Last Modified: 24 Oct 2026

    Summary:

    Details: A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/, http://www.openwall.com/lists/oss-security/2022/02/18/2, http://www.openwall.com/lists/oss-security/2022/02/23/2, https://www.debian.org/security/2022/dsa-5080, https://ubuntu.com/security/notices/USN-5292-1, http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html, http://seclists.org/fulldisclosure/2022/Dec/4, http://www.openwall.com/lists/oss-security/2022/02/23/1, http://www.openwall.com/lists/oss-security/2022/11/30/2

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.54.2
    2.54.1
    2.54

    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-2021-44731 | CVE-DB