Use-after-free vulnerability in the opj_j2k_write_mco function in j2k.c in OpenJPEG before 2.1.1 allows remote attackers to have unspecified impact via unknown vectors.
https://security.gentoo.org/glsa/201612-26
https://github.com/uclouvain/openjpeg/issues/563
https://github.com/uclouvain/openjpeg/commit/940100c28ae28931722290794889cf84a92c5f6f
https://github.com/uclouvain/openjpeg/blob/master/CHANGELOG.md
https://bugzilla.redhat.com/show_bug.cgi?id=1263359
http://www.securitytracker.com/id/1038623
http://www.openwall.com/lists/oss-security/2016/05/13/1