The GD Graphics Library (aka LibGD) 2.2.5 has a double free in the gdImage*Ptr() functions in gdgifout.c, gdjpeg.c, and gdwbmp.c. NOTE: PHP is unaffected.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-6978.json"