description: 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.
problem types: Use After Free (CWE-416)
affected:
{
product: HHVM
vendor: Facebook
versions:
lessThan: unspecified, status: unaffected, version: 4.62.1, versionType: custom
status: affected, version: 4.62.0
lessThan: unspecified, status: unaffected, version: 4.61.1, versionType: custom
status: affected, version: 4.61.0
lessThan: unspecified, status: unaffected, version: 4.60.1, versionType: custom
status: affected, version: 4.60.0
lessThan: unspecified, status: unaffected, version: 4.59.1, versionType: custom
status: affected, version: 4.59.0
lessThan: unspecified, status: unaffected, version: 4.58.2, versionType: custom
lessThan: unspecified, status: affected, version: 4.58.0, versionType: custom
lessThan: unspecified, status: unaffected, version: 4.57.1, versionType: custom
status: affected, version: 4.57.0
lessThan: unspecified, status: unaffected, version: 4.56.1, versionType: custom
lessThan: unspecified, status: affected, version: 4.33.0, versionType: custom
lessThan: unspecified, status: unaffected, version: 4.32.3, versionType: custom
lessThan: 4.32.3, status: affected, version: unspecified, versionType: custom
}