Description of problem: sddm cores due to a null pointer being passed to src/daemon/XorgDisplayServer.cpp:90 SDDM::XorgDisplayServer::addCookie. addCookie calls XauWriteAuth on line 127 which assumes the file pointer is not NULL. The file pointer is checked for null on line 123, but no action is taken to prevent that null file pointer from being passed to XauWriteAuth. This code was added by the 0001-Port-from-xauth-to-libXau.patch in sddm-0.14.0-14 Version-Release number of selected component (if applicable): fedora 26: sddm-0.14.0-14.x86_64 How reproducible: Always Steps to Reproduce: 1. On a fedora 26 install without a running display server create a non-root user. # useradd testuser 2. switch to this user # su - testuser 3. Start sddm from the command line. $ sddm Actual results: sddm cores. Expected results: sddm does not core. Additional info:
Hey, thanks for noticing. I'm stupid for not putting the return there, the branch is even prepared for that. I'm going to fix that right away.
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Fedora 26 changed to end-of-life (EOL) status on 2018-05-29. Fedora 26 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.