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PHP ZVAL Reference Counter Integer Overflow Vulnerability

References:

• HPSBMA02215 SSRT071423 (HP)
  
• MOPB-01-2007:PHP 4 Userland ZVAL Reference Counter Overflow Vulnerability (Stefan Esser)
  
• MOPB-04-2007:PHP 4 unserialize() ZVAL Reference Counter Overflow (Stefan Esser)
  
• PHP 4 - Reference Counter Overflow Fix (Stefan Esser)
  
• PHP Homepage (PHP)
  
• RHSA-2007:0154-4 php security update (Red Hat)
  
• RHSA-2007:0155-2 php security update (Red Hat)
  
• RHSA-2007:0163-3 - php security update for Stronghold (Red Hat)
  
• SUSE Security Announcement: php4,php5 security problems (SUSE-SA:2007:032) (SUSE)