The dissect_write_structured_field function in epan/dissectors/packet-tn5250.c in the TN5250 dissector in Wireshark 1.10.x before 1.10.11 and 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (infinite loop) via a crafted packet.
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=10596
http://www.wireshark.org/security/wnpa-sec-2014-23.html
http://www.securityfocus.com/bid/71072
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.debian.org/security/2014/dsa-3076
http://secunia.com/advisories/60290
http://secunia.com/advisories/60231
http://rhn.redhat.com/errata/RHSA-2015-1460.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00104.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-December/145658.html