UBUNTU-CVE-2020-26541

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    UBUNTU-CVE-2020-26541

    Published: 2 Oct 2020Last Modified: 9 Sept 2026
    Upstream:
    CVE-2020-26541
    Aliases:
    USN-5070-1
    USN-5106-1
    USN-5120-1

    Summary:

    Details: The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.

    References: https://ubuntu.com/security/CVE-2020-26541, https://lkml.org/lkml/2020/9/15/1871, https://lore.kernel.org/lkml/[email protected]/, https://lore.kernel.org/lkml/[email protected]/, https://lore.kernel.org/lkml/161428671215.677100.6372209948022011988.stgit@warthog.procyon.org.uk/, https://lore.kernel.org/lkml/[email protected]/, https://ubuntu.com/security/notices/USN-5070-1, https://ubuntu.com/security/notices/USN-5106-1, https://ubuntu.com/security/notices/USN-5120-1, https://ubuntu.com/security/notices/USN-5210-1, https://www.cve.org/CVERecord?id=CVE-2020-26541

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.11.0-12.19

    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-2020-26541 | CVE-DB