New submission from Brian Curtin <cur...@acm.org>: Creating an mmap object can crash the interpreter on Windows if a file descriptor is passed in which is outside of the range for _get_osfhandle. I noticed the crash possibility while reviewing the Modules/mmapmodule.c code for work on another issue related to the consistency of the exceptions which mmap raises.
This can be tested by creating a mmap object with the file descriptor for a socket. This is not a valid way to create an mmap, but it represents a valid file descriptor which is out of range. For example, I created a socket with a file descriptor of 124, and _get_osfhandle expects the descriptor to be between 0 and 23. Patch against trunk, with a test. Note that this does not seem to affect 2.6 (not sure why, yet). ---------- components: Library (Lib), Windows files: mmap_crash.diff keywords: patch messages: 100774 nosy: brian.curtin priority: normal severity: normal stage: patch review status: open title: mmap crash on Windows with out of range file descriptor type: crash versions: Python 2.7, Python 3.1, Python 3.2 Added file: http://bugs.python.org/file16515/mmap_crash.diff _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue8105> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
