The Font Xtra.x32 module in Adobe Shockwave Player before 11.5.9.620 allows attackers to execute arbitrary code or cause a denial of service (memory corruption) via a PFR1 chunk containing an invalid size value that leads to an unexpected sign extension and a buffer overflow, a different vulnerability than CVE-2011-0556.
https://exchange.xforce.ibmcloud.com/vulnerabilities/65260
http://www.vupen.com/english/advisories/2011/0335
http://www.securitytracker.com/id?1025056
http://www.securityfocus.com/archive/1/516335/100/0/threaded
http://www.adobe.com/support/security/bulletins/apsb11-01.html