UBUNTU-CVE-2022-21499

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    UBUNTU-CVE-2022-21499

    Published: 24 May 2022Last Modified: 9 Sept 2026
    Upstream:
    CVE-2022-21499
    Aliases:
    USN-5465-1
    USN-5466-1
    USN-5467-1

    Summary:

    Details: KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

    References: https://ubuntu.com/security/CVE-2022-21499, https://www.openwall.com/lists/oss-security/2022/05/24/7, https://www.openwall.com/lists/oss-security/2022/05/24/10, https://ubuntu.com/security/notices/USN-5465-1, https://ubuntu.com/security/notices/USN-5466-1, https://ubuntu.com/security/notices/USN-5467-1, https://ubuntu.com/security/notices/USN-5468-1, https://ubuntu.com/security/notices/USN-5469-1, https://ubuntu.com/security/notices/USN-5470-1, https://ubuntu.com/security/notices/USN-5471-1, https://ubuntu.com/security/notices/USN-5484-1, https://www.cve.org/CVERecord?id=CVE-2022-21499

    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-2022-21499 | CVE-DB