cmsxform.c in LittleCMS (aka lcms or liblcms) 1.18, as used in OpenJDK and other products, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted image that triggers execution of incorrect code for "transformations of monochrome profiles."
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.