Python Integer Overflow or Wraparound Vulnerability - CVE-2018-20406
Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is mishandled during a quotresize to twice the sizequot attempt. This issue might cause memory exhaustion but is only relevant if the pickle format is used for serializing tens or hundreds of gigabytes of data.