chpass in OpenBSD 2.0 through 3.2 allows local users to read portions of arbitrary files via a hard link attack on a temporary file used to store user database information.
GitHubSource code pulled from OpenBSD for LibreSSL - this includes most of the library and supporting code. The place to contribute to this code is via the OpenBSD CVS tree. Please mail patches to [email protected], instead of submitting pull requests, since this tree is often rebased.