UBUNTU-CVE-2021-3501

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    UBUNTU-CVE-2021-3501

    Published: 6 May 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-3501

    Summary:

    Details: A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.

    References: https://ubuntu.com/security/CVE-2021-3501, https://git.kernel.org/linus/04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a, https://ubuntu.com/security/notices/USN-4977-1, https://ubuntu.com/security/notices/USN-4983-1, https://www.cve.org/CVERecord?id=CVE-2021-3501

    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-2021-3501 | CVE-DB