UBUNTU-CVE-2021-47003

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    UBUNTU-CVE-2021-47003

    Published: 28 Feb 2024Last Modified: 24 Oct 2025
    Upstream:
    CVE-2021-47003

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix potential null dereference on pointer status There are calls to idxd_cmd_exec that pass a null status pointer however a recent commit has added an assignment to *status that can end up with a null pointer dereference. The function expects a null status pointer sometimes as there is a later assignment to *status where status is first null checked. Fix the issue by null checking status before making the assignment. Addresses-Coverity: ("Explicit null dereferenced")

    References: https://ubuntu.com/security/CVE-2021-47003, https://git.kernel.org/linus/28ac8e03c43dfc6a703aa420d18222540b801120, https://git.kernel.org/stable/c/5756f757c72501ef1a16f5f63f940623044180e9, https://git.kernel.org/stable/c/2280b4cc29d8cdd2be3d1b2d1ea4f958e2131c97, https://git.kernel.org/stable/c/7bc402f843e7817a4a808e7b9ab0bcd7ffd55bfa, https://git.kernel.org/stable/c/28ac8e03c43dfc6a703aa420d18222540b801120, https://www.cve.org/CVERecord?id=CVE-2021-47003

    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-2021-47003 | CVE-DB