Bug 2494429

Summary: CVE-2026-55686 podman: Podman: Host filesystem modification via malicious container image WORKDIR symlink [fedora-all]
Product: [Fedora] Fedora Reporter: Jon Weiser <jweiser>
Component: podmanAssignee: Lokesh Mandvekar <lsm5>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: bbaude, debarshir, dwalsh, go-sig, jnovy, lsm5, mboddu, mheon, nsella, patrick, pholzing, suraj.ghimire7
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["89ecff83-4ed1-49f9-940f-57ddb000fd8c"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-06-29 16:59:22 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2493624    

Description Jon Weiser 2026-06-29 15:03:41 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.

Podman is a tool for managing OCI containers and pods. From 3.0.0 until 5.7.1, running a malicious container image where the WORKDIR path contains a symlink can create a directory or modify ownership on the host filesystem. Modified ownership is less likely to happen as that requires help from an untrusted/malicious process that mutates the host filesystem tree during dereferencing of the WORKDIR path, to trigger a race condition. This vulnerability is fixed in 5.7.1.

Comment 1 Paul Holzinger 2026-06-29 16:59:22 UTC
Rawhide ships podman 6 already which contains the fix for the problem. And f43 and f43 ships podman 5.8 which also have the fix for this