UBUNTU-CVE-2016-2550

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    UBUNTU-CVE-2016-2550

    Published: 24 Feb 2016Last Modified: 22 Apr 2026
    Upstream:
    CVE-2016-2550
    Aliases:
    USN-2946-1
    USN-2946-2
    USN-2947-1

    Summary:

    Details: The Linux kernel before 4.5 allows local users to bypass file-descriptor limits and cause a denial of service (memory consumption) by leveraging incorrect tracking of descriptor ownership and sending each descriptor over a UNIX socket before closing it. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-4312.

    References: https://ubuntu.com/security/CVE-2016-2550, http://www.openwall.com/lists/oss-security/2016/02/24/2, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=415e3d3e90ce9e18727e8843ae343eda5a58fad6, https://ubuntu.com/security/notices/USN-2946-2, https://ubuntu.com/security/notices/USN-2946-1, https://ubuntu.com/security/notices/USN-2947-1, https://ubuntu.com/security/notices/USN-2947-2, https://ubuntu.com/security/notices/USN-2947-3, https://ubuntu.com/security/notices/USN-2948-1, https://ubuntu.com/security/notices/USN-2949-1, https://www.cve.org/CVERecord?id=CVE-2016-2550

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-85.129

    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-2016-2550 | CVE-DB