Out-of-bounds array write in Xpdf 4.05 and earlier, due to incorrect integer overflow checking in the PostScript function interpreter code.
Out-of-bounds array write in Xpdf 4.05 and earlier, due to missing object type check in AcroForm field reference.
In Xpdf 4.05 (and earlier), very large coordinates in a page box can cause an integer overflow and divide-by-zero.