40 lines
1.1 KiB
Diff
40 lines
1.1 KiB
Diff
From 531dfa4bcfe55d5cd1524425944b07c5b02bddf9 Mon Sep 17 00:00:00 2001
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From: Charalampos Stratakis <cstratak@redhat.com>
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Date: Fri, 8 Jul 2016 17:16:41 +0200
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Subject: [PATCH] CVE-2016-5636 fix
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---
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Modules/zipimport.c | 9 +++++++++
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1 file changed, 9 insertions(+)
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diff --git a/Modules/zipimport.c b/Modules/zipimport.c
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index 06abb31..4d0d1de 100644
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--- a/Modules/zipimport.c
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+++ b/Modules/zipimport.c
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@@ -1076,6 +1076,10 @@ get_data(PyObject *archive, PyObject *toc_entry)
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&date, &crc)) {
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return NULL;
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}
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+ if (data_size < 0) {
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+ PyErr_Format(ZipImportError, "negative data size");
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+ return NULL;
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+ }
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fp = _Py_fopen_obj(archive, "rb");
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if (!fp)
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@@ -1112,6 +1116,11 @@ get_data(PyObject *archive, PyObject *toc_entry)
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}
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file_offset += l; /* Start of file data */
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+ if (data_size > LONG_MAX - 1) {
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+ fclose(fp);
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+ PyErr_NoMemory();
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+ return NULL;
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+ }
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bytes_size = compress == 0 ? data_size : data_size + 1;
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if (bytes_size == 0)
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bytes_size++;
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--
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2.7.4
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