UBUNTU-CVE-2016-6213

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    UBUNTU-CVE-2016-6213

    Published: 14 Jul 2016Last Modified: 26 Aug 2026
    Upstream:
    CVE-2016-6213
    Aliases:
    USN-3160-1
    USN-3160-2
    USN-3161-1

    Summary:

    Details: fs/namespace.c in the Linux kernel before 4.9 does not restrict how many mounts may exist in a mount namespace, which allows local users to cause a denial of service (memory consumption and deadlock) via MS_BIND mount system calls, as demonstrated by a loop that triggers exponential growth in the number of mounts.

    References: https://ubuntu.com/security/CVE-2016-6213, http://www.openwall.com/lists/oss-security/2016/07/13/6, https://ubuntu.com/security/notices/USN-3160-1, https://ubuntu.com/security/notices/USN-3160-2, https://ubuntu.com/security/notices/USN-3161-1, https://ubuntu.com/security/notices/USN-3161-2, https://ubuntu.com/security/notices/USN-3161-3, https://ubuntu.com/security/notices/USN-3161-4, https://ubuntu.com/security/notices/USN-3162-1, https://ubuntu.com/security/notices/USN-3162-2, https://www.cve.org/CVERecord?id=CVE-2016-6213

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-106.153

    Affected versions

    3.11.0-12.19

    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
    UBUNTU-CVE-2016-6213 | CVE-DB