.NET Core is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET Core that address a security vulnerability are now available. The updated versions are .NET Core SDK 3.1.111 and .NET Core Runtime 3.1.11. Security Fix: * dotnet: ASP.NET Core Callbacks outside of locks cause Krestel deadlock when using HTTP2 For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.