An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/pkcs15-prkey.c has an incorrect free operation in sc_pkcs15_decode_prkdf_entry.
Created opensc tracking bugs for this issue:
Affects: epel-6 [bug 1782952]
Affects: fedora-all [bug 1782951]
Please note that this issue was was introduced with https://github.com/OpenSC/OpenSC/commit/630d6adf32cecaab0ee184618f56497bd50400fb and fixed with https://github.com/OpenSC/OpenSC/commit/6ce6152284c47ba9b1d4fe8ff9d2e6a3f5ee02c7, therefore no release versions of opensc are affected by this issue.