CVE-2017-12932

ext/standard/var_unserializer.re in PHP 7.0.x through 7.0.22 and 7.1.x
through 7.1.8 is prone to a heap use after free while unserializing
untrusted data, related to improper use of the hash API for key deletion in
a situation with an invalid array size. Exploitation of this issue can have
an unspecified impact on the integrity of PHP.

Bugs

• <https://bugs.php.net/bug.php?id=74103&gt;