UBUNTU-CVE-2018-20855

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    UBUNTU-CVE-2018-20855

    Published: 26 Jul 2019Last Modified: 16 Jul 2025
    Upstream:
    CVE-2018-20855

    Summary:

    Details: An issue was discovered in the Linux kernel before 4.18.7. In create_qp_common in drivers/infiniband/hw/mlx5/qp.c, mlx5_ib_create_qp_resp was never initialized, resulting in a leak of stack memory to userspace.

    References: https://ubuntu.com/security/CVE-2018-20855, https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7, https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0625b4ba1a5d4703c7fb01c497bd6c156908af00, https://github.com/torvalds/linux/commit/0625b4ba1a5d4703c7fb01c497bd6c156908af00, https://www.cve.org/CVERecord?id=CVE-2018-20855

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.2.0-16.19

    Affected versions

    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