UBUNTU-CVE-2021-46918

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    UBUNTU-CVE-2021-46918

    Published: 27 Feb 2024Last Modified: 24 Oct 2025
    Upstream:
    CVE-2021-46918

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: clear MSIX permission entry on shutdown Add disabling/clearing of MSIX permission entries on device shutdown to mirror the enabling of the MSIX entries on probe. Current code left the MSIX enabled and the pasid entries still programmed at device shutdown.

    References: https://ubuntu.com/security/CVE-2021-46918, https://git.kernel.org/linus/6df0e6c57dfc064af330071f372f11aa8c584997, https://git.kernel.org/stable/c/c84b8982d7aa9b4717dc36a1c6cbc93ee153b500, https://git.kernel.org/stable/c/6df0e6c57dfc064af330071f372f11aa8c584997, https://www.cve.org/CVERecord?id=CVE-2021-46918

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/[email protected]~16.04.1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    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
    UBUNTU-CVE-2021-46918 | CVE-DB