partclone.fat in Partclone before 0.2.88 is prone to a heap-based buffer overflow vulnerability due to insufficient validation of the FAT superblock, related to the mark_reserved_sectors function. An attacker may be able to execute arbitrary code in the context of the user running the affected application.

partclone.chkimg in partclone 0.2.89 is prone to a heap-based buffer overflow vulnerability due to insufficient validation of the partclone image header. An attacker may be able to launch a 'Denial of Service attack' in the context of the user running the affected application.