[New-bugs-announce] [issue41459] pickle.load raises SystemError on malformed input

Guillaume report at bugs.python.org
Sun Aug 2 16:56:15 EDT 2020

New submission from Guillaume <guillaume+python at atto.be>:

pickle.load() raises a criptic SystemError with malformed input, whereas I would have expected an UnpicklingError. 

"SystemError: deallocated bytearray object has exported buffers"

Because pickle is not meant for use on untrusted input, this likely would not be considered a servere issue. 


import pickle
f = open("crash-95c0cb965cb66f5eebc778a1d2304eaffb72f1aa", "rb")
d = pickle.load(f)

components: Argument Clinic
files: crash-95c0cb965cb66f5eebc778a1d2304eaffb72f1aa
messages: 374695
nosy: Guillaume, larry
priority: normal
severity: normal
status: open
title: pickle.load raises SystemError on malformed input
versions: Python 3.8
Added file: https://bugs.python.org/file49358/crash-95c0cb965cb66f5eebc778a1d2304eaffb72f1aa

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