File python-3.6-CVE-2017-18207.patch of Package python3.13676

From ae0ed14794ced2c51c822fc6f0d3ca92064619dd Mon Sep 17 00:00:00 2001
From: BT123 <abcdyzhang@163.com>
Date: Fri, 17 Nov 2017 16:45:45 +0800
Subject: [PATCH] bug in wave.py

---
 Lib/wave.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Lib/wave.py b/Lib/wave.py
index cf94d5af72b4..6db5a2e9cc96 100644
--- a/Lib/wave.py
+++ b/Lib/wave.py
@@ -259,6 +259,8 @@ def _read_fmt_chunk(self, chunk):
             self._sampwidth = (sampwidth + 7) // 8
         else:
             raise Error('unknown format: %r' % (wFormatTag,))
+        if self._nchannels == 0:
+            raise ValueError("The audio file in wav format should have at least one channel!")
         self._framesize = self._nchannels * self._sampwidth
         self._comptype = 'NONE'
         self._compname = 'not compressed'