UBUNTU-CVE-2020-25639

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    UBUNTU-CVE-2020-25639

    Published: 4 Mar 2021Last Modified: 9 Sept 2026
    Upstream:
    CVE-2020-25639
    Aliases:
    USN-4911-1
    USN-4945-1
    USN-4945-2

    Summary:

    Details: A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5.12-rc1 in the way the user calls ioctl DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC. This flaw allows a local user to crash the system.

    References: https://ubuntu.com/security/CVE-2020-25639, https://lists.freedesktop.org/archives/nouveau/2020-August/036682.html, https://ubuntu.com/security/notices/USN-4911-1, https://ubuntu.com/security/notices/USN-4945-1, https://ubuntu.com/security/notices/USN-4949-1, https://ubuntu.com/security/notices/USN-4945-2, https://www.cve.org/CVERecord?id=CVE-2020-25639

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/linux-hwe-edge?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-2020-25639 | CVE-DB