UBUNTU-CVE-2019-20795

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    UBUNTU-CVE-2019-20795

    Published: 9 May 2020Last Modified: 4 Feb 2026
    Upstream:
    CVE-2019-20795
    Aliases:
    USN-4357-1

    Summary:

    Details: iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, although not a default, are sometimes a configuration option offered to end users. Even when setuid is used, other factors (such as C library configuration) may block exploitability.

    References: https://ubuntu.com/security/CVE-2019-20795, https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=9bf2c538a0eb10d66e2365a655bf6c52f5ba3d10, https://ubuntu.com/security/notices/USN-4357-1, https://www.cve.org/CVERecord?id=CVE-2019-20795

    Affected packages

    Package

    Name: iproute2

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.15.0-2ubuntu1.1

    Affected versions

    4.9.0-1ubuntu2
    4.9.0-1ubuntu3

    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-2019-20795 | CVE-DB