python3: Security fix CVE-2016-5636

Affects python3 < 3.5.1
Base Score (4.4) Medium

(From OE-Core rev: a7cbd6805febadaad60d1e05899e10e9a8a36c26)

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 45 insertions, 0 deletions

diff --git a/meta/recipes-devtools/python/python3/CVE-2016-5636.patch b/meta/recipes-devtools/python/python3/CVE-2016-5636.patch
new file mode 100644
index 0000000000..0d494d20f4
--- /dev/null
+++ b/meta/recipes-devtools/python/python3/CVE-2016-5636.patch
@@ -0,0 +1,44 @@
+
+# HG changeset patch
+# User Benjamin Peterson <benjamin@python.org>
+# Date 1453357506 28800
+# Node ID 10dad6da1b28ea4af78ad9529e469fdbf4ebbc8f
+# Parent  a3ac2cd93db9d5336dfd7b5b27efde2c568d8794# Parent  01ddd608b85c85952537d95a43bbabf4fb655057
+merge 3.4 (#26171)
+
+Upstream-Status: Backport
+CVE: CVE-2016-5636
+
+https://hg.python.org/cpython/raw-rev/10dad6da1b28
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+Index: Python-3.5.1/Misc/NEWS
+===================================================================
+--- Python-3.5.1.orig/Misc/NEWS
++++ Python-3.5.1/Misc/NEWS
+@@ -91,6 +91,9 @@ Core and Builtins
+   Python.h header to fix a compilation error with OpenMP. PyThreadState_GET()
+   becomes an alias to PyThreadState_Get() to avoid ABI incompatibilies.
+ 
++- Issue #26171: Fix possible integer overflow and heap corruption in
++  zipimporter.get_data().
++
+ Library
+ -------
+ 
+Index: Python-3.5.1/Modules/zipimport.c
+===================================================================
+--- Python-3.5.1.orig/Modules/zipimport.c
++++ Python-3.5.1/Modules/zipimport.c
+@@ -1112,6 +1112,11 @@ get_data(PyObject *archive, PyObject *to
+     }
+     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++;
diff --git a/meta/recipes-devtools/python/python3_3.5.1.bb b/meta/recipes-devtools/python/python3_3.5.1.bb
index 0d667d2ad8..bf29d1252f 100644
--- a/meta/recipes-devtools/python/python3_3.5.1.bb
+++ b/meta/recipes-devtools/python/python3_3.5.1.bb
@@ -37,6 +37,7 @@ SRC_URI += "\
             file://setup.py-find-libraries-in-staging-dirs.patch \
             file://use_packed_importlib.patch \
             file://configure.ac-fix-LIBPL.patch \
+            file://CVE-2016-5636.patch \
            "
 SRC_URI[md5sum] = "e9ea6f2623fffcdd871b7b19113fde80"
 SRC_URI[sha256sum] = "c6d57c0c366d9060ab6c0cdf889ebf3d92711d466cc0119c441dbf2746f725c9"