Mandriva Linux Security Advisory 2015-180 – apache-mod_wsgi before 4.2.4 contained an off-by-one error in applying a limit to the number of supplementary groups allowed for a daemon process group. The result could be that if more groups than the operating system allowed were specified to the option supplementary-groups, then memory corruption or a process crash could occur. It was discovered that mod_wsgi incorrectly handled errors when setting up the working directory and group access rights. A malicious application could possibly use this issue to cause a local privilege escalation when using daemon mode.