PDFium, as used in Google Chrome before 44.0.2403.89, does not properly handle certain out-of-memory conditions, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted PDF document that triggers a large memory allocation.
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.