It may be possible to make Wireshark crash, hang, or execute code by convincing someone to read a malformed packet trace file.
Affects 1.8.0 to 1.8.1 and is fixed in upstream 1.8.2 version.
This issue did not affect the versions of wireshark as shipped with Red Hat Enterprise Linux 5 or 6.
Created wireshark tracking bugs for this issue
Affects: fedora-rawhide [bug 848589]
wireshark-1.8.2-1.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.