...Apart from the security patches, some of the binaries include additional fixes for the issues raised at https://issues.liferay.com/ (Liferay Issue Tracking System).
Please note, that this is not an official Liferay repository. The patches were kindly provided by the Liferay Community Security team members, which was compiled and released here.
Source code for the security fixes can be found at https://github.com/community-security-team/liferay-portal
In addition, we recommend using Liferay DXP for official product support, faster delivery of patches and updates baked by Liferay Team itself.