AWS batch high security documentation change

Service: batch · 2026-03-25 · Security-related high

File: batch/latest/userguide/eks-al2-ami-deprecation.md

Summary

Updated AMI deprecation notice from future tense to past tense, indicating support has ended and adding emphasis on migration requirement

Security assessment

The change explicitly states that Amazon EKS optimized Amazon Linux 2 AMIs no longer receive security patches, which is a direct security concern. The update emphasizes the security risk of running unsupported AMIs without security updates.

Diff

diff --git a/batch/latest/userguide/eks-al2-ami-deprecation.md b/batch/latest/userguide/eks-al2-ami-deprecation.md
index b83deb2c9..c7a9312ef 100644
--- a//batch/latest/userguide/eks-al2-ami-deprecation.md
+++ b//batch/latest/userguide/eks-al2-ami-deprecation.md
@@ -7 +7 @@
-AWS will end support for Amazon EKS optimized Amazon Linux 2 AMIs, effective 11/26/25. We recommend migrating AWS Batch Amazon EKS compute environments to Amazon Linux 2023 prior to 11/26/25 to maintain optimal performance and security.
+AWS ended support for Amazon EKS optimized Amazon Linux 2 AMIs on November 26, 2025. On October 27, 2025, AWS Batch changed the default AMI for new Amazon EKS compute environments to Amazon Linux 2023. Amazon EKS optimized Amazon Linux 2 AMIs no longer receive software updates, security patches, or bug fixes from AWS.
@@ -9 +9,3 @@ AWS will end support for Amazon EKS optimized Amazon Linux 2 AMIs, effective 11/
-While you can continue using Batch-provided Amazon EKS optimized Amazon Linux 2 AMIs on your Amazon EKS compute environments beyond the 11/26/25 end-of-support date, these compute environments will no longer receive any new software updates, security patches, or bug fixes from AWS. It is your responsibility to maintain these compute environments on the Amazon EKS optimized Amazon Linux 2 AMI after end-of-life.
+###### Important
+
+If you have AWS Batch Amazon EKS compute environments still using Amazon Linux 2, we strongly recommend migrating to Amazon Linux 2023. It is your responsibility to maintain Amazon EKS optimized Amazon Linux 2 compute environments after end-of-life.