Midnight commander (mc) 4.5.55 and earlier allows remote attackers to cause a denial of service via "use of already freed memory."
https://exchange.xforce.ibmcloud.com/vulnerabilities/18905
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-1091
http://www.redhat.com/support/errata/RHSA-2005-512.html