tiff -- Multiple integer overflows

Tielei Wang:

Multiple integer overflows in inter-color spaces conversion
tools in libtiff 3.8 through 3.8.2, 3.9, and 4.0 allow
context-dependent attackers to execute arbitrary code via a
TIFF image with large (1) width and (2) height values, which
triggers a heap-based buffer overflow in the (a) cvt_whole_image
function in tiff2rgba and (b) tiffcvt function in rgb2ycbcr.