In libsixel v1.8.2, there is a heap-based buffer over-read in the function load_jpeg() in the file loader.c, as demonstrated by img2sixel.
{ "versions": [ { "introduced": "0" }, { "last_affected": "1.8.2" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-3574.json"