The sd2_parse_rsrc_fork function in sd2.c in libsndfile allows attackers to have unspecified impact via vectors related to a (1) map offset or (2) rsrc marker, which triggers an out-of-bounds read.
https://security.gentoo.org/glsa/201612-03
https://seclists.org/bugtraq/2019/Apr/23
https://github.com/erikd/libsndfile/commit/dbe14f00030af5d3577f4cabbf9861db59e9c378
http://www.ubuntu.com/usn/USN-2832-1
http://www.securityfocus.com/bid/71796
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
http://www.openwall.com/lists/oss-security/2015/01/04/4
http://www.mandriva.com/security/advisories?name=MDVSA-2015:024
http://secunia.com/advisories/62320
http://lists.opensuse.org/opensuse-updates/2015-01/msg00016.html