When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.
                
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Affected Vendors & Products
References
        History
                    No history.
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: facebook
Published:
Updated: 2024-08-04T06:54:00.541Z
Reserved: 2019-12-02T00:00:00
Link: CVE-2020-1900
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Modified
Published: 2021-03-11T01:15:14.490
Modified: 2024-11-21T05:11:34.540
Link: CVE-2020-1900
 Redhat
                        Redhat
                    No data.