libsixel Denial of Service Vulnerability

libsixel is a package that provides an encoding/decoding implementation for DEC SIXEL graphics and other converter programs. libsixel has a denial of service vulnerability in v1.10.3 and earlier, which stems from a NULL pointer dereference in libsixel’s stb_image.h component, and can be exploited by an attacker to cause a denial of service via crafted PICT file to cause a denial of service (DOS).