Impact An issue in s2n-quic results in the endpoint shutting down after receiving an empty UDP packet on a connection. No AWS services are affected by this issue and customers of AWS services do not need to take action. Applications using s2n-quic should upgrade their application to the most recent release of s2n-quic. Impacted version: s2n-quic v1.22.0. Patches The patch is included in s2n-quic "v1.23.0" (https://github.com/aws/s2n-quic/releases/tag/v1.23.0). If you have any questions or comments about this advisory we ask that you contact AWS/Amazon Security via our "vulnerability reporting page" (https://aws.amazon.com/security/vulnerability-reporting) or directly via email to "aws-security@amazon.com" (mailto:aws-security@amazon.com). Please do not create a public GitHub issue.