This move protects major Linux distributions such as Ubuntu, Fedora, and Debian from the mandates of the Digital Age Assurance Act.
This exemption is significant because it separates community-driven software from proprietary platforms like Windows, macOS, iOS, and Android, which must still implement age-collection protocols by January 2027.
By refining the legal definition of an operating system provider, the bill ensures that the open-source ecosystem is not forced to build data-collection infrastructure that contradicts its privacy-focused design.
The law also includes protections for package managers—the digital tools used to install and update software—by excluding them from being classified as regulated application stores.
While the bill provides a clear path for many projects, the status of hybrid systems like Valve's SteamOS remains uncertain due to its mix of open-source components and proprietary software.
Beyond the Linux exemption, the updated bill establishes a legal "safe harbor," a provision that protects developers from liability if age signals provided by an operating system are inaccurate.
The measure now moves to Governor Gavin Newsom for final signature.