The TCOS smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based buffer overflow in tcos_decipher.
www.openwall.com/lists/oss-security/2020/11/24/4
bugs.chromium.org/p/oss-fuzz/issues/detail?id=22967
github.com/OpenSC/OpenSC/commit/9d294de90d1cc66956389856e60b6944b27b4817
lists.debian.org/debian-lts-announce/2021/11/msg00027.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXOHFDMNMO6IDECAGUTB3SJGAGXVRT6S/