Multiple use-after-free vulnerabilities in Privoxy before 3.0.22 allow remote attackers to have unspecified impact via vectors related to (1) the unmap function in list.c or (2) "two additional unconfirmed use-after-free complaints made by Coverity scan." NOTE: some of these details are obtained from third party information.
http://www.privoxy.org/announce.txt
http://www.openwall.com/lists/oss-security/2015/01/11/1