Created attachment 1261763[details]
reproducer
gssproxy checks the contents of the GSS_USE_PROXY envvar in order to determine whether it should be used. rpc.gssd is causing secure_getenv() to return NULL on this variable, which breaks gssproxy.
Attached is a Vagrantfile helpfully provided by the original reporter on the gssproxy mailing list. To see the problem, break on gss_mech_interposer() and observe the return value from gp_getenv() (which wraps secure_getenv()).
Comment 7Fedora Update System
2017-04-25 02:23:53 UTC
selinux-policy-3.13.1-225.13.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
Created attachment 1261763 [details] reproducer gssproxy checks the contents of the GSS_USE_PROXY envvar in order to determine whether it should be used. rpc.gssd is causing secure_getenv() to return NULL on this variable, which breaks gssproxy.