Integer overflow in the SplashBitmap::SplashBitmap function in Xpdf 3.x before 3.02pl4 and Poppler before 0.12.1 might allow remote attackers to execute arbitrary code via a crafted PDF document that triggers a heap-based buffer overflow.  NOTE: some of these details are obtained from third party information.  NOTE: this issue reportedly exists because of an incomplete fix for CVE-2009-1188.