Fix possible integer overflow and heap corruption in zipimport module

00209-prevent-buffer-overflow-in-zipimport-module.patch

@@ -0,0 +1,16 @@
+diff --git a/Modules/zipimport.c b/Modules/zipimport.c
+index 06abb31..914bf5d 100644
+--- a/Modules/zipimport.c
++++ b/Modules/zipimport.c
+@@ -1112,6 +1112,11 @@ get_data(PyObject *archive, PyObject *toc_entry)
+     }
+     file_offset += l;           /* Start of file data */
+ 
++    if (data_size > LONG_MAX - 1) {
++        fclose(fp);
++        PyErr_NoMemory();
++        return NULL;
++    }
+     bytes_size = compress == 0 ? data_size : data_size + 1;
+     if (bytes_size == 0)
+         bytes_size++;

python3.spec

@@ -140,7 +140,7 @@
 Summary: Version 3 of the Python programming language aka Python 3000
 Name: python3
 Version: %{pybasever}.2
-Release: 6%{?dist}
+Release: 7%{?dist}
 License: Python
 Group: Development/Languages
 
@@ -730,6 +730,12 @@ Patch202: 00202-fix-undefined-behaviour-in-faulthandler.patch
 # openssl requires DH keys to be > 768bits
 Patch204: 00204-increase-dh-keys-size.patch
 
+# https://bugs.python.org/issue26171
+# https://hg.python.org/cpython/rev/10dad6da1b28/
+# Fix possible integer overflow and heap corruption in zipimporter.get_data()
+# FIXED UPSTREAM
+Patch209: 00209-prevent-buffer-overflow-in-zipimport-module.patch
+
 # (New patches go here ^^^)
 #
 # When adding new patches to "python" and "python3" in Fedora 17 onwards,
@@ -1019,6 +1025,8 @@ sed -r -i s/'_PIP_VERSION = "[0-9.]+"'/'_PIP_VERSION = "%{pip_version}"'/ Lib/en
 %patch202 -p1
 %patch204 -p1
 
+%patch209 -p1
+
 # Currently (2010-01-15), http://docs.python.org/library is for 2.6, and there
 # are many differences between 2.6 and the Python 3 library.
 #
@@ -1908,6 +1916,9 @@ rm -fr %{buildroot}
 # ======================================================
 
 %changelog
+* Mon Jun 13 2016 Charalampos Stratakis <cstratak@redhat.com> - 3.4.2-6
+- Added patch for fixing possible integer overflow and heap corruption in zipimporter.get_data()
+
 * Thu Jul 09 2015 Thomas Spura <tomspur@fedoraproject.org> - 3.4.2-6
 - sync with master branch to backport some fixes
 - Use 1024bit DH key in test_ssl (Matej Stuchlik)