libsixel img2sixel Denial of Service Vulnerability

libsixel is a package that provides encoding/decoding implementations for DEC SIXEL graphics and other converter programs. libsixel img2sixel version 1.8.6 suffers from a denial of service vulnerability stemming from a floating-point exception error in ssixel_encoder_do_resize, encoder.c:633. A remote attacker could exploit this vulnerability to cause a denial of service via a specially crafted JPEG file.