UBUNTU-CVE-2016-1575

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    UBUNTU-CVE-2016-1575

    Published: 22 Feb 2016Last Modified: 22 Apr 2026
    Upstream:
    CVE-2016-1575
    Aliases:
    USN-2907-1
    USN-2907-2
    USN-2908-1

    Summary:

    Details: The overlayfs implementation in the Linux kernel through 4.5.2 does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.

    References: https://ubuntu.com/security/CVE-2016-1575, http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/, https://ubuntu.com/security/notices/USN-2910-1, https://ubuntu.com/security/notices/USN-2908-3, https://ubuntu.com/security/notices/USN-2908-1, https://ubuntu.com/security/notices/USN-2907-1, https://ubuntu.com/security/notices/USN-2909-1, https://ubuntu.com/security/notices/USN-2907-2, https://ubuntu.com/security/notices/USN-2908-2, https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/trusty/commit/?id=4dc7ebf4284cdc90e8f3cd617ed247aade2ca39f, https://www.cve.org/CVERecord?id=CVE-2016-1575

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-79.123

    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