UBUNTU-CVE-2016-0728

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    UBUNTU-CVE-2016-0728

    Published: 19 Jan 2016Last Modified: 22 Apr 2026
    Upstream:
    CVE-2016-0728
    Aliases:
    USN-2870-1
    USN-2870-2
    USN-2871-1

    Summary:

    Details: The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object references in a certain error case, which allows local users to gain privileges or cause a denial of service (integer overflow and use-after-free) via crafted keyctl commands.

    References: https://ubuntu.com/security/CVE-2016-0728, http://perception-point.io/2016/01/14/analysis-and-exploitation-of-a-linux-kernel-vulnerability-cve-2016-0728/, https://ubuntu.com/security/notices/USN-2872-1, https://ubuntu.com/security/notices/USN-2872-2, https://ubuntu.com/security/notices/USN-2872-3, https://ubuntu.com/security/notices/USN-2871-2, https://ubuntu.com/security/notices/USN-2871-1, https://ubuntu.com/security/notices/USN-2873-1, https://ubuntu.com/security/notices/USN-2870-1, https://ubuntu.com/security/notices/USN-2870-2, https://www.cve.org/CVERecord?id=CVE-2016-0728

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-76.120

    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