Bug 2507711 - CVE-2026-42306 podman: Moby container framework: Host file overwrite via race condition in docker cp mount setup [fedora-all]
Summary: CVE-2026-42306 podman: Moby container framework: Host file overwrite via race...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: podman
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Lokesh Mandvekar
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["93171e02-3645-4f6c-ad7c-6...
Depends On:
Blocks: CVE-2026-42306
TreeView+ depends on / blocked
 
Reported: 2026-07-27 20:47 UTC by Matteo Signorini
Modified: 2026-07-28 12:55 UTC (History)
12 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-07-28 12:55:27 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Matteo Signorini 2026-07-27 20:47:24 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.

Comment 1 Lokesh Mandvekar 2026-07-28 12:55:27 UTC
Hi Matteo, the "CVE-2026-42306" in bz summary gives me a 404. Can we please ensure that the cve page works before the bugs are filed?

Anyway, podman doesn't depend on the docker/moby daemon, so this is NOTABUG.


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