Amazon Linux 2027 Enters Public Preview with SELinux Enforcing by Default

Billy Odell Tucker-Robinson Founder & Host — Banking With Billy Network • Intelligence Network • Data Science • AI Research • World News
Published: 2026-09-15T04:33:14.078Z • Permanent link

Amazon's latest move to release Amazon Linux 2027 in public preview is a significant development in the world of open-source operating systems. The new version is built on the AL2023 baseline with kernel 7.1 and SELinux in enforcing mode by default. This change is a departure from the permissive mode that was previously used, which may cause applications that were compatible with AL2023's permissive mode to fail under enforcing. The public preview announcement does not provide any further details on the end-of-life for AL2023, but it is clear that Amazon is shifting its focus towards more secure and robust configurations.

One individual who has been closely following Amazon's Linux development is Seth Lubkin, a senior technical writer at Red Hat. Lubkin notes that the shift to enforcing SELinux mode is a significant change and may require applications to be rewritten or recompiled to ensure compatibility. He also highlights the importance of the Linux community's role in reviewing and testing the new version to ensure that it meets the needs of a wide range of users. "The Linux community has always been about collaboration and sharing knowledge," Lubkin says. "This public preview is a great example of how we can work together to ensure that open-source software meets the needs of everyone.

Meanwhile, AWS has released Amazon Linux 2027 in public preview, built on the AL2023 baseline with kernel 7.1 and SELinux in enforcing mode by default. Applications that pass on AL2023's permissive mode may fail under enforcing. The announcement gives no AL2023 end-of-life date, but it is expected to be announced in the near future. The public preview is available now for developers to test and provide feedback.

The impact of Amazon Linux 2027's shift to enforcing SELinux mode will be felt across a range of industries and markets. Companies such as IBM and HP Enterprise will need to review their applications and ensure that they are compatible with the new version. Research communities and developers will also need to adapt to the changes, which may require significant rework. According to a recent survey by the Linux Foundation, 75% of respondents reported that security is a top priority when it comes to open-source software. "This change is a significant step forward in terms of security," says Lubkin. "It's a reminder that open-source software is not just about code, but also about community and collaboration.

The shift to enforcing SELinux mode also has implications for policy environments and regulatory frameworks. Governments and regulatory bodies will need to consider the implications of this change and how it may affect compliance with existing regulations. According to a recent report by the National Institute of Standards and Technology, 60% of respondents reported that they are concerned about the impact of open-source software on security and compliance. "This change is a wake-up call for organizations to take a closer look at their open-source software usage and ensure that they are compliant with existing regulations," says Lubkin.

The shift to enforcing SELinux mode is part of a larger trend towards more secure and robust open-source configurations. In recent years, there has been a growing recognition of the importance of security in open-source software. According to a recent report by the Open Source Security Foundation, 70% of respondents reported that they are more likely to use open-source software that has a strong security track record. "This change is a reflection of the growing awareness of the importance of security in open-source software," says Lubkin. "It's a reminder that open-source software is not just about code, but also about community and collaboration.