USN-2644-2

    Dashboard / Vulnerabilities / USN-2644-2

    USN-2644-2

    Published: 21 Jun 2015Last Modified: 10 Feb 2026

    Summary: linux-lts-utopic regression

    Details: The Fix for CVE-2015-1328 introduced a regression into the Linux kernel's overlayfs file system. The removal of a directory that only exists on the lower layer results in a kernel panic. We apologize for the inconvenience. Original advisory details: Philip Pettersson discovered a privilege escalation when using overlayfs mounts inside of user namespaces. A local user could exploit this flaw to gain administrative privileges on the system.

    References: https://ubuntu.com/security/notices/USN-2644-2, http://bugs.launchpad.net/bugs/1465998

    Affected packages

    Package

    Name: linux-lts-utopic

    Purl: pkg:deb/ubuntu/[email protected]~14.04.1?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.16.0-41.57~14.04.1

    Affected versions

    3.16.0-25.33~14.04.2
    3.16.0-26.35~14.04.1
    3.16.0-28.37~14.04.1
    3.16.0-28.38~14.04.1
    3.16.0-29.39~14.04.1
    3.16.0-30.40~14.04.1
    3.16.0-31.41~14.04.1
    3.16.0-31.43~14.04.1
    3.16.0-33.44~14.04.1
    3.16.0-34.45~14.04.1
    3.16.0-34.47~14.04.1
    3.16.0-36.48~14.04.1
    3.16.0-37.49~14.04.1
    3.16.0-37.51~14.04.1
    3.16.0-38.52~14.04.1
    3.16.0-39.53~14.04.1
    3.16.0-40.54~14.04.1
    3.16.0-41.55~14.04.1

    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