Use-after-free vulnerability in pcsc-lite before 1.8.20 allows a remote attackers to cause denial of service (crash) via a command that uses "cardsList" after the handle has been released through the SCardReleaseContext function.
https://security.gentoo.org/glsa/201702-01
https://salsa.debian.org/rousseau/PCSC/-/commit/697fe05967af7ea215bcd5d5774be587780c9e22
https://lists.alioth.debian.org/pipermail/pcsclite-muscle/Week-of-Mon-20161226/000779.html
http://www.ubuntu.com/usn/USN-3176-1
http://www.securityfocus.com/bid/95263