Kyeongseok Yang

A stack-based buffer over-read in the ComputeResizeImage function in the MagickCore/accelerate.c file allows a remote attacker to cause a denial of service, resulting in an application crash, via a maliciously crafted pict file.

The issue is related to a memory leak in the ReadDCMImage function. This function is located in coders/dcm.c. The memory leak occurs because the `redmap`, `greenmap`, and `bluemap` variables can be overwritten by new pointers, causing the previous pointers to be lost. This allows remote attackers to cause a denial of service.