An error related to the "LibRaw::panasonic_load_raw()" function (dcraw_common.cpp) in LibRaw versions prior to 0.18.6 can be exploited to cause a heap-based buffer overflow and subsequently cause a crash via a specially crafted TIFF image.
https://usn.ubuntu.com/3615-1/
https://secuniaresearch.flexerasoftware.com/secunia_research/2017-19/
https://secuniaresearch.flexerasoftware.com/advisories/76000/
https://github.com/LibRaw/LibRaw/commit/f1394822a0152ceed77815eafa5cac4e8baab10a