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| author | Gregory P. Smith <greg@krypto.org> | 2018-08-25 01:08:50 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-08-25 01:08:50 (GMT) |
| commit | 76be0fffff8b7dbe649ad4821144461800ffb0d0 (patch) | |
| tree | 9ef8e6646a08ddf8ae63a2600945b3c47f3ab79b /Modules | |
| parent | eb746dbae8b320758ee08f811316d7f283435cc0 (diff) | |
| download | cpython-76be0fffff8b7dbe649ad4821144461800ffb0d0.zip cpython-76be0fffff8b7dbe649ad4821144461800ffb0d0.tar.gz cpython-76be0fffff8b7dbe649ad4821144461800ffb0d0.tar.bz2 | |
bpo-13312: Avoid int underflow in time year. (GH-8912)
Avoids an integer underflow in the time module's year handling code.
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/timemodule.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Modules/timemodule.c b/Modules/timemodule.c index 998216c..dbe2fba 100644 --- a/Modules/timemodule.c +++ b/Modules/timemodule.c @@ -551,6 +551,12 @@ gettmarg(PyObject *args, struct tm *p, const char *format) &p->tm_hour, &p->tm_min, &p->tm_sec, &p->tm_wday, &p->tm_yday, &p->tm_isdst)) return 0; + + if (y < INT_MIN + 1900) { + PyErr_SetString(PyExc_OverflowError, "year out of range"); + return 0; + } + p->tm_year = y - 1900; p->tm_mon--; p->tm_wday = (p->tm_wday + 1) % 7; |