UBUNTU-CVE-2025-21833

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    UBUNTU-CVE-2025-21833

    Published: 6 Mar 2025Last Modified: 8 Oct 2026
    Upstream:
    CVE-2025-21833
    Aliases:
    USN-8095-1
    USN-8095-2
    USN-8095-3

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Avoid use of NULL after WARN_ON_ONCE There is a WARN_ON_ONCE to catch an unlikely situation when domain_remove_dev_pasid can't find the `pasid`. In case it nevertheless happens we must avoid using a NULL pointer.

    References: https://ubuntu.com/security/CVE-2025-21833, https://www.cve.org/CVERecord?id=CVE-2025-21833, https://git.kernel.org/linus/60f030f7418d3f1d94f2fb207fe3080e1844630b, https://git.kernel.org/stable/c/60f030f7418d3f1d94f2fb207fe3080e1844630b, https://git.kernel.org/stable/c/df96876be3b064aefc493f760e0639765d13ed0d, https://ubuntu.com/security/notices/USN-8095-1, https://ubuntu.com/security/notices/USN-8100-1, https://ubuntu.com/security/notices/USN-8095-2, https://ubuntu.com/security/notices/USN-8095-3, https://ubuntu.com/security/notices/USN-8095-4, https://ubuntu.com/security/notices/USN-8125-1, https://ubuntu.com/security/notices/USN-8126-1, https://ubuntu.com/security/notices/USN-8095-5, https://ubuntu.com/security/notices/USN-8165-1, https://ubuntu.com/security/notices/USN-8261-1

    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-2025-21833 | CVE-DB