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CVE-2026-93315

CVE-2026-93315 · BuildKit proxy CA cleanup can be disrupted by build steps

This page contains facts from public vulnerability sources. Check the original advisory before updating.

When proxy networking with CA injection is enabled, a build can modify its CA bundle before cleanup. This may cause cleanup to block, operate outside the build rootfs, or fail without failing the build.

CVSS 5.8 · Medium · EPSS 0.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • buildkit

    Versions
    • ≥ 0.31.0, < 0.33.1: Affected (semver)

    Update to 0.33.1

  • docker.io Ubuntu:Pro:16.04:LTS

    Versions
    • 1.6.2~dfsg1-1ubuntu4
    • 1.10.2-0ubuntu3
    • 1.10.2-0ubuntu4
    • 1.10.3-0ubuntu1
    • 1.10.3-0ubuntu4
    • 1.10.3-0ubuntu5
    • 1.10.3-0ubuntu6
    • 1.11.2-0ubuntu5~16.04
    • 1.12.1-0ubuntu13~16.04.1
    • 1.12.3-0ubuntu4~16.04.2
    • 1.12.6-0ubuntu1~16.04.1
    • 1.13.1-0ubuntu1~16.04.2
    • 17.03.2-0ubuntu2~16.04.1
    • 18.06.1-0ubuntu1~16.04.2
    • 18.06.1-0ubuntu1.2~16.04.1
    • 18.09.2-0ubuntu1~16.04.1
    • 18.09.5-0ubuntu1~16.04.2
    • 18.09.7-0ubuntu1~16.04.1
    • 18.09.7-0ubuntu1~16.04.4
    • 18.09.7-0ubuntu1~16.04.5
    • 18.09.7-0ubuntu1~16.04.6
    • 18.09.7-0ubuntu1~16.04.7
    • 18.09.7-0ubuntu1~16.04.9+esm1
    • 18.09.7-0ubuntu1~16.04.9+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io Ubuntu:Pro:18.04:LTS

    Versions
    • 1.13.1-0ubuntu6
    • 17.03.2-0ubuntu1
    • 17.03.2-0ubuntu3
    • 17.03.2-0ubuntu5
    • 17.12.1-0ubuntu1
    • 18.06.1-0ubuntu1~18.04.1
    • 18.06.1-0ubuntu1.2~18.04.1
    • 18.09.2-0ubuntu1~18.04.1
    • 18.09.5-0ubuntu1~18.04.2
    • 18.09.7-0ubuntu1~18.04.1
    • 18.09.7-0ubuntu1~18.04.3
    • 18.09.7-0ubuntu1~18.04.4
    • 19.03.6-0ubuntu1~18.04.1
    • 19.03.6-0ubuntu1~18.04.2
    • 19.03.6-0ubuntu1~18.04.3
    • 20.10.2-0ubuntu1~18.04.2
    • 20.10.2-0ubuntu1~18.04.3
    • 20.10.7-0ubuntu1~18.04.1
    • 20.10.7-0ubuntu1~18.04.2
    • 20.10.7-0ubuntu5~18.04.2
    • 20.10.7-0ubuntu5~18.04.3
    • 20.10.12-0ubuntu2~18.04.1
    • 20.10.21-0ubuntu1~18.04.2
    • 20.10.21-0ubuntu1~18.04.3
    • 20.10.21-0ubuntu1~18.04.3+esm1
    • 20.10.21-0ubuntu1~18.04.3+esm2
    • 20.10.21-0ubuntu1~18.04.3+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io Ubuntu:Pro:20.04:LTS

    Versions
    • 19.03.2-0ubuntu1
    • 19.03.6-0ubuntu1
    • 19.03.8-0ubuntu1
    • 19.03.8-0ubuntu1.20.04
    • 19.03.8-0ubuntu1.20.04.1
    • 19.03.8-0ubuntu1.20.04.2
    • 20.10.2-0ubuntu1~20.04.2
    • 20.10.2-0ubuntu1~20.04.3
    • 20.10.7-0ubuntu1~20.04.1
    • 20.10.7-0ubuntu1~20.04.2
    • 20.10.7-0ubuntu5~20.04.1
    • 20.10.7-0ubuntu5~20.04.2
    • 20.10.12-0ubuntu2~20.04.1
    • 20.10.21-0ubuntu1~20.04.1
    • 20.10.21-0ubuntu1~20.04.2
    • 20.10.21-0ubuntu1~20.04.4
    • 20.10.21-0ubuntu1~20.04.5
    • 20.10.21-0ubuntu1~20.04.6
    • 20.10.21-0ubuntu1~20.04.6+esm1
    • 20.10.21-0ubuntu1~20.04.6+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io-app Ubuntu:Pro:20.04:LTS

    Versions
    • 20.10.25-0ubuntu1~20.04.1
    • 20.10.25-0ubuntu1~20.04.2
    • 24.0.5-0ubuntu1~20.04.1
    • 24.0.7-0ubuntu2~20.04.1
    • 26.1.3-0ubuntu1~20.04.1
    • 26.1.3-0ubuntu1~20.04.1+esm1
    • 26.1.3-0ubuntu1~20.04.1+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io Ubuntu:Pro:22.04:LTS

    Versions
    • 20.10.7-0ubuntu5
    • 20.10.7-0ubuntu7
    • 20.10.12-0ubuntu1
    • 20.10.12-0ubuntu2
    • 20.10.12-0ubuntu3
    • 20.10.12-0ubuntu3+gke1.24.1
    • 20.10.12-0ubuntu4
    • 20.10.21-0ubuntu1~22.04.2
    • 20.10.21-0ubuntu1~22.04.3
    • 20.10.21-0ubuntu1~22.04.5
    • 20.10.21-0ubuntu1~22.04.6
    • 20.10.21-0ubuntu1~22.04.7
    • 20.10.21-0ubuntu1~22.04.7+esm1
    • 20.10.21-0ubuntu1~22.04.7+esm2
    • 20.10.21-0ubuntu1~22.04.8
    • 20.10.21-0ubuntu1~22.04.8+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io-app Ubuntu:Pro:22.04:LTS

    Versions
    • 20.10.25-0ubuntu1~22.04.1
    • 20.10.25-0ubuntu1~22.04.2
    • 24.0.5-0ubuntu1~22.04.1
    • 24.0.7-0ubuntu2~22.04.1
    • 26.1.3-0ubuntu1~22.04.1
    • 26.1.3-0ubuntu1~22.04.1+esm1
    • 27.5.1-0ubuntu3~22.04.1
    • 27.5.1-0ubuntu3~22.04.2
    • 28.2.2-0ubuntu1~22.04.1
    • 29.1.3-0ubuntu3~22.04.1
    • 29.1.3-0ubuntu3~22.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io Ubuntu:Pro:24.04:LTS

    Versions
    • 20.10.24+dfsg1-1ubuntu2
    • 20.10.25+dfsg1-2ubuntu1
    • 20.10.25+dfsg1-2ubuntu1+esm1
    • 20.10.25+dfsg1-2ubuntu1+esm2
    • 20.10.25+dfsg1-2ubuntu1.24.04.1
    • 20.10.25+dfsg1-2ubuntu1.24.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io-app Ubuntu:Pro:24.04:LTS

    Versions
    • 24.0.5-0ubuntu1
    • 24.0.7-0ubuntu1
    • 24.0.7-0ubuntu2
    • 24.0.7-0ubuntu3
    • 24.0.7-0ubuntu4
    • 24.0.7-0ubuntu4.1
    • 26.1.3-0ubuntu1~24.04.1
    • 26.1.3-0ubuntu1~24.04.1+esm1
    • 27.5.1-0ubuntu3~24.04.1
    • 27.5.1-0ubuntu3~24.04.2
    • 28.2.2-0ubuntu1~24.04.1
    • 29.1.3-0ubuntu3~24.04.1
    • 29.1.3-0ubuntu3~24.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io Ubuntu:26.10

    Versions
    • 27.5.1+dfsg4-2ubuntu1
    • 28.5.2+dfsg4-5ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io-app Ubuntu:26.10

    Versions
    • 29.1.3-0ubuntu4
    • 29.1.3-0ubuntu5
    • 29.1.3-0ubuntu6
    • 29.7.2-0ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io Ubuntu:26.04:LTS

    Versions
    • 26.1.5+dfsg1-9ubuntu1
    • 27.5.1+dfsg4-1ubuntu1
    • 27.5.1+dfsg4-2ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io-app Ubuntu:26.04:LTS

    Versions
    • 28.2.2-0ubuntu1
    • 29.1.2-0ubuntu1
    • 29.1.3-0ubuntu1
    • 29.1.3-0ubuntu2
    • 29.1.3-0ubuntu3
    • 29.1.3-0ubuntu4
    • 29.1.3-0ubuntu4.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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