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Bug #78472 Crash on unserializing large dataset
Submitted: 2019-08-28 14:54 UTC Modified: 2019-08-29 06:13 UTC
From: martin at tiogatours dot nl Assigned: nikic (profile)
Status: Closed Package: Reproducible crash
PHP Version: 7.4.0beta4 OS: Windows 10 x64
Private report: No CVE-ID: None
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From: martin at tiogatours dot nl
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 [2019-08-28 14:54 UTC] martin at tiogatours dot nl 
Description:
------------
I got unexpected PHP crashes when unserializing a object. There is no recursiveness in the serialized object as the data is created from a JSON object.

However, when you disable the recursive ArrayObject creation, the script succeeds. Also, when creating a recursive stdClass(), the problem doesn't exist

Test script:
---------------
Error unserializing with ArrayObject:
https://3v4l.org/hbSRC

This succeeds with the stdClass:
https://3v4l.org/HNXR6

Expected result:
----------------
Valid unserializing

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 [2019-08-28 15:03 UTC] nikic@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: nikic
 [2019-08-28 15:03 UTC] nikic@php.net 
We fixed a couple of serialization related bugs in 7.4 recently, and both of your  examples run fine on current 7.4 HEAD. So this will be resolved in the next release :)
 [2019-08-29 06:13 UTC] martin at tiogatours dot nl 
Thanks! Keep up the good work!
 
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