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Date: Fri, 10 Jun 2016 17:02:58 -0400
From: Insu Yun <>
To:, Yeongjin Jang <>
Subject: CVE-Request: heap overflow in Python

In zipimport module,
if compress != 0, then bytes_size = data_size + 1
data_size is not sanitized, so if data_size = -1,
then it overflows and becomes 0.
In that case bytes_size becomes 1 and python allocates small heap,
but after that in fread, it overflows heap.

Fix info

Please help assign a CVE to this vulnerability.

Thank you.

Insu Yun

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