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Linux has not been sanctioned. The Linux Foundation’s January 29, 2025 guide, Navigating Global Regulations and Open Source: US OFAC Sanctions, warns that U.S. sanctions rules can affect some open-source transactions and relationships. Depending on the sanctions program and facts, risk may involve two-way technical collaboration, services, intellectual-property rights, contracts, sponsorships, or work that directly benefits a blocked person or company—not merely payments.
The guide is compliance-awareness material, not a legal ruling. OFAC has not published a comprehensive rule explaining how every open-source or standards activity should be treated. Projects with a U.S. connection should assess the specific parties, ownership, location, activity and applicable program, and send uncertain cases to counsel.
What the Linux Foundation actually published
The Foundation published its guide on January 29, 2025, for developers and organizations subject to U.S. sanctions law or collaborating with parties that must follow it. It says most developers can continue participating in open source, while warning that “free,” public or volunteer-based work does not automatically remove compliance obligations. The Foundation directs project questions to its legal team or the guide’s contact route and expressly says the material is not legal advice.
What OFAC sanctions cover
The U.S. Treasury Department’s Office of Foreign Assets Control (OFAC) administers sanctions programs that can be comprehensive or targeted. Restrictions may apply to named people and entities, governments, countries or regions, sectors, and particular types of transactions. Programs can block property and prohibit services, trade, contracts or other dealings; licenses and exemptions vary by program.
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OFAC’s official program pages are updated over time. As of August 2026, the live resource lists recent changes affecting, among others, Russia, Belarus, Cuba, Iran, cyber-related activity and counterterrorism. Check OFAC’s current sanctions-program and country pages rather than relying on an old list or a 2025 article.
Why global open source can create U.S. sanctions exposure
Open-source communities are international, but projects often use U.S.-based foundations, companies, employees, cloud infrastructure, payment systems, contracts or sponsors. Those connections can bring U.S. sanctions obligations into an otherwise global workflow.
The relevant question is not simply whether a developer has a particular nationality. It is whether a transaction involves a blocked person or organization, a restricted location, a sanctioned employer or sponsor, a covered service or intellectual-property right, or a product that directly benefits a restricted party. Non-U.S. participants may also have obligations under their own countries’ sanctions regimes, and may encounter U.S. jurisdiction through a U.S. employer, organization, service, currency or transaction.
The crucial distinction: existing code versus interactive services
The Foundation draws a practical, but not guaranteed, line between receiving existing material and performing requested technical work.
| Activity | How the Foundation characterizes the issue |
|---|---|
| Unsolicited general bug-fix patch, submitted without two-way discussion and independently reviewed by maintainers | May fit more comfortably within an “informational materials” rationale, depending on the facts. |
| Asking a person to write or modify code | Could be treated as providing a service rather than merely transferring existing information. |
| Back-and-forth debugging, diagnosis, support or directed code improvement | Interactive technical assistance may create a sanctions concern. |
| Contribution that specifically enables a blocked party’s product, hardware or service | Functional benefit to the restricted party can increase risk, even if the code is public. |
| Contributor-license agreement, sponsorship, payment or other intellectual-property contract with a blocked party | The contractual or IP transaction itself may be prohibited. |
This is a risk framework, not a safe-harbor chart. The same patch can have different implications depending on who commissioned it, who owns the resulting rights, how it is used and which sanctions program applies.
Is public open-source code automatically exempt?
No. OFAC sanctions and the Commerce Department’s Export Administration Regulations (EAR) are separate regimes. Publicly available software often receives favorable treatment under the EAR’s rules for published technology, but that does not automatically resolve an OFAC question.
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The Foundation says most OFAC programs contain an exemption for importing or exporting “informational materials,” and that existing open-source code generally appears capable of falling within that concept. It also warns that the rationale may not cover asking a sanctioned developer to create new code, troubleshoot a defect, modify software or provide support. Do not describe open source as universally exempt from U.S. sanctions or export law.
Why an SDN-list search is only a first step
OFAC’s Specially Designated Nationals (SDN) List is important, but it is not the entire sanctions system. A search result can be clean while a transaction remains restricted because:
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- OFAC’s 50 Percent Rule treats an entity as blocked when blocked persons own 50% or more of it, directly or indirectly, in aggregate, even if the entity is not named on the SDN List.
- Comprehensive measures can cover a country, region or government rather than a particular company.
- Sectoral or activity-based restrictions may apply without a traditional SDN designation.
- Lists and program rules change frequently.
- Another country may impose separate sanctions.
Use the official OFAC Sanctions List Service and OFAC sanctions-search tool for initial screening. Neither replaces ownership research, program analysis or legal advice. A personal email address, pseudonym or personal Git account also does not prove that a contribution is independent of a sanctioned employer or funder.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What “strict liability” means here
The Foundation describes OFAC sanctions as strict-liability rules. In practical terms, ignorance, good intentions or volunteer status may not by themselves eliminate liability for a prohibited transaction. That does not mean that every interaction with someone located in a sanctioned country is illegal, or that nationality alone determines the answer. The prohibition, available license or exemption and relevant defenses depend on the program and facts.
A maintainer’s sanctions-compliance checklist
- Identify the governing entity. Record the foundation, company or individual legally operating the project.
- Map jurisdictions. Consider the maintainer, contributor, sponsor, employer, infrastructure provider, payment system and contracting entity.
- Screen people and organizations. Check current OFAC resources and document the date and search terms.
- Investigate ownership and control. Look beyond an exact-name match and apply the 50 Percent Rule where relevant.
- Identify the program. Check country, regional, sectoral and activity-based restrictions, not just the SDN List.
- Classify the activity. Separate receipt of existing code from requested development, debugging, support, payment, licensing or other services.
- Assess the practical beneficiary. Ask whether the result directly enables a restricted party’s product or service.
- Review agreements and money flows. Include contributor-license agreements, employment links, sponsorships, reimbursements and contracts.
- Limit unnecessary interactive work. Do not direct or troubleshoot a contribution while an unresolved sanctions concern remains.
- Keep an audit trail. Preserve who checked what, when, under which policy and with what conclusion.
- Escalate ambiguity. Ask qualified counsel or the employer’s compliance team instead of relying on community assumptions.
- Recheck periodically. Sanctions programs and ownership information change.
Linux Foundation projects can use the Foundation’s existing verification and compliance processes and contact the Foundation or [email protected] with project-specific questions.
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- It does not say that Linux, the Linux kernel or open-source software as a whole is banned.
- It does not ban every Russian developer or every contribution from a sanctioned-country resident.
- It does not make the SDN List a complete compliance test.
- It does not turn the Foundation’s examples into binding OFAC interpretations.
- It does say that U.S.-connected projects should examine services, ownership, contracts, IP and functional benefits as well as payments.
The Foundation’s January 2025 post remains useful background, but its application must be checked against the rules and lists in force when a transaction occurs. For a difficult case, obtain advice tailored to the parties, software, location and sanctions program.
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