CVE-2020-21048
An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file.
Date published : 2021-09-14
https://bitbucket.org/netbsd/pkgsrc/commits/6f0c011cbfccdffa635d04c84433b1a02687adad