Wireshark failed to properly assign data-type for some data field parsed via the PPP dissector. It may be possible to make Wireshark crash by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.
Upstream advisory: http://www.wireshark.org/security/wnpa-sec-2012-27.html
This issue does not affect the version of wireshark as shipped with Red Hat Enterprise Linux 5 and 6.
This issue not affect the version of wireshark as shipped with Fedora 16 and 17.
This issue affects the version of wireshark as shipped with Fedora 18.
Created wireshark tracking bugs for this issue
Affects: fedora-18 [bug 862547]