UBUNTU-CVE-2026-121522

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    UBUNTU-CVE-2026-121522

    Published: 3 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-121522

    Summary:

    Details: In BuildKit versions v0.26.0 through v0.34.1, a specific build definition that resolves metadata for the same Git source reference twice can cause the BuildKit daemon to panic and crash, interrupting builds handled by that daemon. The issue is fixed in v0.34.2.

    References: https://ubuntu.com/security/CVE-2026-121522, https://www.cve.org/CVERecord?id=CVE-2026-121522, https://github.com/moby/buildkit/security/advisories/GHSA-2fqp-xg6f-v7gj

    Affected packages

    Package

    Name: docker.io

    Purl: pkg:deb/ubuntu/docker.io?arch=source&distro=esm-infra%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.6.2~dfsg1-1ubuntu4

    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-2026-121522 | CVE-DB