UBUNTU-CVE-2013-1956

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    UBUNTU-CVE-2013-1956

    Published: 24 Apr 2013Last Modified: 16 Jul 2025
    Upstream:
    CVE-2013-1956

    Summary:

    Details: The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.

    References: https://ubuntu.com/security/CVE-2013-1956, http://www.openwall.com/lists/oss-security/2013/04/16, https://www.cve.org/CVERecord?id=CVE-2013-1956

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.11.0-12.19

    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