GraphicsMagick 1.3.26 has a NULL pointer dereference in the WriteMAPImage() function in coders/map.c when processing a non-colormapped image, a different vulnerability than CVE-2017-11638.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-11642.json"
[ { "events": [ { "introduced": "0" }, { "last_affected": "1.3.26" } ] } ]