The apprentice_load function in libmagic/apprentice.c in the Fileinfo component in PHP through 5.6.4 attempts to perform a free operation on a stack-based character array, which allows remote attackers to cause a denial of service (memory corruption or application crash) or possibly have unspecified other impact via unknown vectors. NOTE: this is disputed by the vendor because the standard erealloc behavior makes the free operation unreachable
https://bugs.php.net/bug.php?id=68665
http://lists.opensuse.org/opensuse-updates/2015-02/msg00079.html
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=ef89ab2f99fbd9b7b714556d4f1f50644eb54191
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=a72cd07f2983dc43a6bb35209dc4687852e53c09