CVE-2018-7738

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    CVE-2018-7738

    Published: 7 Mar 2018Last Modified: 8 Jul 2026

    Summary:

    Details: In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.

    References: https://usn.ubuntu.com/4512-1/, http://www.securityfocus.com/bid/103367, https://security.netapp.com/advisory/ntap-20241213-0002/, https://www.debian.org/security/2018/dsa-4134, https://github.com/karelzak/util-linux/issues/539, https://bugs.debian.org/892179, https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    v2.31

    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-2018-7738 | CVE-DB