New submission from Jakub Kulik <kulik...@gmail.com>:
C function `subprocess_fork_exec` incorrectly transforms gids from the `extra_groups` argument because it passes `unsigned long*` rather than `pid_t*` into the `_Py_Gid_Converter()`. Assuming that `gid_t` is 32 bit and `unsigned long` is 64 bit (which it often is), `*(gid_t *)p = gid;` then incorrectly overwrites only part of that variable, leaving the other one filled with previous garbage. I found this on Solaris, but I am pretty sure that this doesn't work correctly on Linux as well, since both use `unsigned int` as `gid_t`. ---------- components: Extension Modules messages: 383132 nosy: kulikjak priority: normal severity: normal status: open title: Fix subprocess extra_groups gid conversion versions: Python 3.10, Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue42655> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
