OpenSC before 0.20.0-rc1 has an out-of-bounds access of an ASN.1 Octet string in asn1_decode_entry in libopensc/asn1.c.
https://lists.debian.org/debian-lts-announce/2021/11/msg00027.html
https://lists.debian.org/debian-lts-announce/2019/09/msg00009.html
https://github.com/OpenSC/OpenSC/compare/f1691fc...12218d4
https://github.com/OpenSC/OpenSC/commit/a3fc7693f3a035a8a7921cffb98432944bb42740