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CVE-2026-42306

CVE-2026-42306 · Moby: Race condition in docker cp allows bind mount redirection to host path

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

Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to redirect a bind mount target to an arbitrary host path, potentially overwriting host files or causing denial of service. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.

CVSS 7.2 · High · EPSS 0.1% · Fix available

Published
Updated

Stack: system · containers

Affected products and versions

  • docker engine

    Versions
    • github.com/docker/docker/daemon <= 28.5.2: Affected
    • Docker Engine < 29.5.1: Affected
    • github.com/moby/moby/v2/daemon < 2.0.0-beta.14: Affected

    No fix published

  • docker.io Debian:12

    Versions
    • 20.10.24+dfsg1-1
    • 20.10.24+dfsg1-1+deb12u1
    • 20.10.25+dfsg1-1
    • 20.10.25+dfsg1-2
    • 20.10.25+dfsg1-3
    • 20.10.25+dfsg1-4
    • 26.1.4+dfsg1-1
    • 26.1.4+dfsg1-2
    • 26.1.4+dfsg1-3
    • 26.1.4+dfsg1-4
    • 26.1.4+dfsg1-5
    • 26.1.4+dfsg1-6
    • 26.1.4+dfsg1-7
    • 26.1.4+dfsg1-8
    • 26.1.4+dfsg1-9
    • 26.1.4+dfsg2-1
    • 26.1.4+dfsg3-1
    • 26.1.5+dfsg1-1
    • 26.1.5+dfsg1-10
    • 26.1.5+dfsg1-2
    • 26.1.5+dfsg1-3
    • 26.1.5+dfsg1-4
    • 26.1.5+dfsg1-5
    • 26.1.5+dfsg1-6
    • 26.1.5+dfsg1-7
    • 26.1.5+dfsg1-8
    • 26.1.5+dfsg1-9
    • 27.5.1+dfsg1-1
    • 27.5.1+dfsg1-2
    • 27.5.1+dfsg2-1
    • 27.5.1+dfsg3-1
    • 27.5.1+dfsg3-2
    • 27.5.1+dfsg3-3
    • 27.5.1+dfsg3-4
    • 27.5.1+dfsg3-5
    • 27.5.1+dfsg3-6
    • 27.5.1+dfsg4-1
    • 27.5.1+dfsg4-2
    • 28.5.2+dfsg1-1
    • 28.5.2+dfsg2-1
    • 28.5.2+dfsg3-1
    • 28.5.2+dfsg3-2
    • 28.5.2+dfsg4-1
    • 28.5.2+dfsg4-2
    • 28.5.2+dfsg4-3
    • 28.5.2+dfsg4-4
    • 28.5.2+dfsg4-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • docker.io Debian:13

    Versions
    • 26.1.5+dfsg1-9
    Affected ranges
    • ECOSYSTEM: < 26.1.5+dfsg1-9+deb13u1

    Update to 26.1.5+dfsg1-9+deb13u1

  • docker.io Debian:14

    Versions
    • 26.1.5+dfsg1-10
    • 26.1.5+dfsg1-9
    • 27.5.1+dfsg1-1
    • 27.5.1+dfsg1-2
    • 27.5.1+dfsg2-1
    • 27.5.1+dfsg3-1
    • 27.5.1+dfsg3-2
    • 27.5.1+dfsg3-3
    • 27.5.1+dfsg3-4
    • 27.5.1+dfsg3-5
    • 27.5.1+dfsg3-6
    • 27.5.1+dfsg4-1
    • 27.5.1+dfsg4-2
    • 28.5.2+dfsg1-1
    • 28.5.2+dfsg2-1
    • 28.5.2+dfsg3-1
    • 28.5.2+dfsg3-2
    • 28.5.2+dfsg4-1
    • 28.5.2+dfsg4-2
    Affected ranges
    • ECOSYSTEM: < 28.5.2+dfsg4-3

    Update to 28.5.2+dfsg4-3

  • 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:25.10

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

    No fix published

  • docker.io-app Ubuntu:25.10

    Versions
    • 27.5.1-0ubuntu3
    • 27.5.1-0ubuntu4
    • 28.2.2-0ubuntu1
    • 29.1.3-0ubuntu3~25.10.1
    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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