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| author | Matthias Klose <doko@ubuntu.com> | 2009-04-04 14:18:13 (GMT) |
|---|---|---|
| committer | Matthias Klose <doko@ubuntu.com> | 2009-04-04 14:18:13 (GMT) |
| commit | edb5e1e09ecf92a4911c154217c9c979d827caeb (patch) | |
| tree | a631a110772c6597d07f4c2366b3a7769ae99549 /Python | |
| parent | 29b36308a40d6479f29b093f9decfa6f58fe31a1 (diff) | |
| download | cpython-edb5e1e09ecf92a4911c154217c9c979d827caeb.zip cpython-edb5e1e09ecf92a4911c154217c9c979d827caeb.tar.gz cpython-edb5e1e09ecf92a4911c154217c9c979d827caeb.tar.bz2 | |
- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
short file names.
Diffstat (limited to 'Python')
| -rw-r--r-- | Python/pythonrun.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Python/pythonrun.c b/Python/pythonrun.c index b3866ce..8fc0ca1 100644 --- a/Python/pythonrun.c +++ b/Python/pythonrun.c @@ -898,7 +898,7 @@ PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit, { PyObject *m, *d, *v; const char *ext; - int set_file_name = 0, ret; + int set_file_name = 0, ret, len; m = PyImport_AddModule("__main__"); if (m == NULL) @@ -915,7 +915,8 @@ PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit, set_file_name = 1; Py_DECREF(f); } - ext = filename + strlen(filename) - 4; + len = strlen(filename); + ext = filename + len - (len > 4 ? 4 : 0); if (maybe_pyc_file(fp, filename, ext, closeit)) { /* Try to run a pyc file. First, re-open in binary */ if (closeit) |