OSV-2020-1046 Stack-buffer-overflow in sc_pkcs15emu_object_add

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19251 Crash type: Stack-buffer-overflow READ Crash state: scpkcs15emuobjectadd scpkcs15emucoolkeyinit scpkcs15emucoolkeyinitex...