Bug 2421897

Summary: CVE-2025-66506 podman: Fulcio: Denial of Service via crafted OpenID Connect (OIDC) token [fedora-42]
Product: [Fedora] Fedora Reporter: Praise Ogwuche <pogwuche>
Component: podmanAssignee: Lokesh Mandvekar <lsm5>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 42CC: 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": ["01cd840e-f3b3-44e7-832f-1f6d38f7a549"]}
Fixed In Version: Doc Type: ---
Doc Text:
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Clone Of: Environment:
Last Closed: 2025-12-15 13:44:07 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: 2419056    

Description Praise Ogwuche 2025-12-12 21:37:45 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.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Comment 1 Lokesh Mandvekar 2025-12-15 13:44:07 UTC 
vulnerable code not vendored in podman main or the latest `v5.7` branch shipped in Fedora. 

Ref: 
fulcio change: https://github.com/sigstore/fulcio/commit/765a0e57608b9ef390e1eeeea8595b9054c63a5a
podman fulcio vendor: https://github.com/containers/podman/tree/v5.7/vendor/github.com/sigstore/fulcio/pkg