UBUNTU-CVE-2026-40226

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    UBUNTU-CVE-2026-40226

    Published: 10 Apr 2026Last Modified: 8 Sept 2026
    Upstream:
    CVE-2026-40226
    Aliases:
    USN-8402-1

    Summary:

    Details: In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

    References: https://ubuntu.com/security/CVE-2026-40226, https://www.cve.org/CVERecord?id=CVE-2026-40226, https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx, https://ubuntu.com/security/notices/USN-8402-1

    Affected packages

    Package

    Name: systemd

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    204-0ubuntu18

    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-2026-40226 | CVE-DB